1--TEST-- 2Test unset(), empty() and isset() functions 3--FILE-- 4<?php 5echo "*** Testing unset(), empty() & isset() with scalar variables ***\n"; 6 7// testing scalar variables 8$scalar_variables = array( 9 0, 10 1, 11 +1 12 -1, 13 0x55, 14 -0xFA, 15 0123, 16 -0563, 17 0.0, 18 1e5, 19 1E-5, 20 -1.5e5, 21 +5.6, 22 "", 23 '', 24 " ", 25 ' ', 26 "string", 27 "123", 28 "0", 29 "ture", 30 "FALSE", 31 "NULL", 32 "null", 33 true, 34 false, 35 TRUE, 36 FALSE 37); 38 39$loop_counter = 1; 40foreach ($scalar_variables as $scalar_var) { 41 $set_var = 10; // this variable to use with isset 42 echo "-- Iteration $loop_counter --\n"; $loop_counter++; 43 44 // checking with isset before unsetting, expected: bool(true) 45 var_dump( isset($scalar_var) ); 46 var_dump( isset($scalar_var, $set_var) ); 47 // checking if the var is empty, expected: bool(false) on most 48 // except "", 0, "0", NULL, FALSE 49 var_dump( empty($scalar_var) ); 50 51 // destroy the variable using unset 52 unset( $scalar_var ); 53 // dump and see if its destroyed, expcted: NULL 54 var_dump( $scalar_var ); 55 56 // check using isset to see if unset, expected: bool(false) 57 var_dump( isset($scalar_var) ); 58 var_dump( isset($scalar_var, $set_var) ); 59 60 // empty to check if empty, expecting bool(true) 61 var_dump( empty($scalar_var) ); 62 63 // isset() with two args, one arg only unset, expected: bool(false) 64 var_dump( isset($scalar_var, $set_var) ); 65 66 // isset() with two args, both args already unset, expected: bool(false); 67 unset($set_var); 68 var_dump( isset($scalar_var, $set_var) ); 69} 70 71echo "\n*** Testing unset(), empty() & isset() with arrays ***\n"; 72$array_variables = array( 73 array(), 74 array(NULL), 75 array(0), 76 array("0"), 77 array(""), 78 array(1,2,3,4), 79 array(1.4,2.5,5.6), 80 array(1 => "One", 2 => "two"), 81 array("Name" => "Jack", "Age" => "30"), 82 array(1,2, "One" => "1", 2 => "two", ""=>"empty", "" => '') 83); 84 85$outer_loop_counter = 1; 86foreach ($array_variables as $array_var) { 87 echo "--- Outerloop Iteration $outer_loop_counter ---\n"; 88 89 // check the isset and unset on non existing key 90 $var = 1; // a var which is defined 91 // try to unset the element which is non-existent 92 unset($array_var['non_existent']); 93 // check using isset() & empty() on a non_existent element in the array 94 var_dump( isset($array_var['non_existent']) ); 95 var_dump( isset($array_var['non_existent'], $var) ); 96 var_dump( isset($array_var['non_existent'], $array_var['none']) ); 97 var_dump( empty($array_var['non_existent']) ); 98 99 // testing empty and isset on arrays 100 var_dump( empty($array_var) ); // expecting bool(false), except: array(), which is considered empty 101 var_dump( isset($array_var) ); // expecting bool(true), except: array(), which is not set 102 103 // get the keys of the $array_var 104 $keys = array_keys($array_var); 105 // unset each element in the array and see the working of unset, isset & empty 106 $inner_loop_counter = 1; 107 foreach ($keys as $key_value) { 108 echo "-- Innerloop Iteration $inner_loop_counter of Outerloop Iteration $outer_loop_counter --\n"; 109 $inner_loop_counter++; 110 111 // unset the element 112 unset($array_var[$key_value]); 113 // dump the array after element was unset 114 var_dump($array_var); 115 // check using isset for the element that was unset 116 var_dump( isset($array_var[$key_val]) ); // expected: bool(false) 117 // calling isset with more args 118 var_dump( isset($array_var[$key_val], $array_var) ); //expected: bool(false) 119 120 // calling empty, expected bool(true) 121 var_dump( empty($array_var[$key_val]) ); 122 123 // dump the array to see that that array did not get modified 124 // because of using isset, empty and unset on its element 125 var_dump($array_var); 126 } 127 128 $outer_loop_counter++; 129 130 // unset the whole array 131 unset($array_var); 132 // dump the array to see its unset 133 var_dump($array_var); 134 // use isset to see that array is not set 135 var_dump( isset($array_var) ); //expected: bool(false) 136 var_dump( isset($array_var, $array_var[$key_val]) ); // expected: bool(false) 137 138 // empty() to see if the array is empty 139 var_dump( empty($array_var) ); // expected: bool(true) 140} 141 142echo "\n*** Testing unset(), empty() & isset() with resource variables ***\n"; 143$fp = fopen(__FILE__, "r"); 144$dfp = opendir( __DIR__ ); 145$resources = array ( 146 $fp, 147 $dfp 148); 149$loop_counter = 1; 150foreach ($resources as $resource) { 151 $temp_var = 10; 152 echo "-- Iteration $loop_counter --\n"; $loop_counter++; 153 //dump the resource first 154 var_dump($resource); 155 156 // check using isset() and empty() 157 var_dump( isset($resource) ); // expected: bool(true) 158 var_dump( empty($resource) ); // expected: bool(false) 159 // call isset() with two args, both set 160 var_dump( isset($resource, $temp_var) ); // expected: bool(true) 161 162 // dump the resource to see using isset() and empty () had no effect on it 163 var_dump($resource); 164 165 // unset the resource 166 unset($resource); 167 // check using isset() and empty() 168 var_dump( isset($resource) ); // expected: bool(flase) 169 var_dump( empty($resource) ); // expected: bool(true) 170 // call isset() with two args, but one set 171 var_dump( isset($resource, $temp_var) ); // expected: bool(false) 172 // uset the temp_var 173 unset($temp_var); 174 // now the isset() with both the args as unset 175 var_dump( isset($resource, $temp_var) ); // expected: bool(false); 176 177 // dump the resource to see if there any effect on it 178 var_dump($resource); 179} 180// unset and dump the array containing all the resources to see that 181// unset works correctly 182unset($resources); 183var_dump($resources); 184var_dump( isset($resources) ); //expected: bool(false) 185var_dump( empty($resources) ); // expected: bool(true) 186 187echo "\n*** Testing unset(), empty() & isset() with objects ***\n"; 188class Point 189{ 190 var $x; 191 var $y; 192 var $lable; 193 194 function __construct($x, $y) { 195 $this->x = $x; 196 $this->y = $y; 197 } 198 199 function setLable($lable) { 200 $this->lable = $lable; 201 } 202 function testPoint() { 203 echo "\nPoint::testPoint() called\n"; 204 } 205} 206$point1 = new Point(30,40); 207 208// use unset/empty/isset to check the object 209var_dump($point1); // dump the object 210 211// check the object and member that is not set 212var_dump( isset($point1) ); // expected: bool(true) 213var_dump( empty($point1) ); // expected: bool(false) 214var_dump( isset($point1->$lable) ); //expected: bool(flase) 215var_dump( empty($point1->$lable) ); //expected: bool(true) 216 217//set the member variable lable and check 218$point1->setLable("Point1"); 219var_dump( isset($point1->$lable) ); //expected: bool(true) 220var_dump( empty($point1->$lable) ); //expected: bool(false) 221 222// dump the object to see that obj was not harmed 223// because of the usage of the isset & empty 224var_dump($point1); 225 226//unset a member and check 227unset($point1->x); 228// dump the point to see that variable was unset 229var_dump($point1); 230var_dump( isset($point1->x) ); // expected: bool(false) 231var_dump( empty($point1->x) ); // expected: bool(true) 232 233// unset all members and check 234unset($point1->y); 235unset($point1->lable); 236// dump the object to check that all variables are unset 237var_dump($point1); 238var_dump( isset($point1) ); // expected: bool(ture) 239var_dump( empty($point1) ); // expected: bool(false) 240 241//unset the object and check 242unset($point1); 243var_dump( isset($point1) ); // expected: bool(false) 244var_dump( empty($point1) ); // expected: bool(true) 245// dump to see that object is unset 246var_dump($point1); 247 248// try isset/unset/empty on a member function 249$point2 = new Point(5,6); 250var_dump( isset($point2->testPoint) ); 251var_dump( empty($point2->testPoint) ); 252unset($point2->testPoint); 253var_dump( isset($point2->testPoint) ); 254var_dump( empty($point2->testPoint) ); 255 256// use get_class_methods to see effect if any 257var_dump( get_class_methods($point2) ); 258// dump the object to see the effect, none expected 259var_dump($point2); 260 261/* testing variation in operation for isset(), empty() & unset(). 262Note: Most of the variation for function unset() is testing by a 263 set of testcases named "Zend/tests/unset_cv??.phpt", only 264 variation not tested are attempted here */ 265 266echo "\n*** Testing possible variation in operation for isset(), empty() & unset() ***\n"; 267/* unset() variation1: checking unset on static variable inside a function. 268 * unset() destroys the variable only in the context of the rest of a function 269 * Following calls will restore the previous value of a variable. 270 */ 271echo "\n** Testing unset() variation 1: unset on static variable inside a function **\n"; 272function test_unset1() { 273 static $static_var; 274 275 // increment the value of the static. this change is in function context 276 $static_var ++; 277 278 echo "value of static_var before unset: $static_var\n"; 279 // check using isset and empty 280 var_dump( isset($static_var) ); 281 var_dump( empty($static_var) ); 282 283 // unset the static var 284 unset($static_var); 285 echo "value of static_var after unset: $static_var\n"; 286 // check using isset and empty 287 var_dump( isset($static_var) ); 288 var_dump( empty($static_var) ); 289 290 // assign a value to static var 291 $static_var = 20; 292 echo "value of static_var after new assignment: $static_var\n"; 293} 294// call the functiont 295test_unset1(); 296test_unset1(); 297test_unset1(); 298 299 300echo "\n** Testing unset() variation 2: unset on a variable passed by ref. inside of a function **\n"; 301/* unset() variation2: Pass by reference 302 * If a variable that is PASSED BY REFERENCE is unset() inside of a function, 303 * only the local variable is destroyed. The variable in the calling environment 304 * will retain the same value as before unset() was called. 305 */ 306function test_unset2( &$ref_val ) { 307 // unset the variable passed 308 unset($ref_val); 309 // check using isset and empty to confirm 310 var_dump( isset($ref_val) ); 311 var_dump( empty($ref_val) ); 312 313 // set the value ot a new one 314 $ref_val = "new value by ref"; 315} 316 317$value = "value"; 318var_dump($value); 319test_unset2($value); 320var_dump($value); 321 322 323echo "\n** Testing unset() variation 3: unset on a global variable inside of a function **\n"; 324/* unset() variation2: unset on a global variable inside a function 325 * If a globalized variable is unset() inside of a function, only the 326 * local variable is destroyed. The variable in the calling environment 327 * will retain the same value as before unset() was called. 328 */ 329$global_var = 10; 330 331function test_unset3() { 332 global $global_var; 333 334 // check the $global_var using isset and empty 335 var_dump( isset($global_var) ); 336 var_dump( empty($global_var) ); 337 338 // unset the global var 339 unset($global_var); 340 341 // check the $global_var using isset and empty 342 var_dump( isset($global_var) ); 343 var_dump( empty($global_var) ); 344} 345 346var_dump($global_var); 347test_unset3(); 348var_dump($global_var); 349 350//Note: No error conditions relating to passing arguments can be tested 351// because these are not functions but statements, it will result in syntax error. 352?> 353--EXPECTF-- 354*** Testing unset(), empty() & isset() with scalar variables *** 355-- Iteration 1 -- 356bool(true) 357bool(true) 358bool(true) 359 360Warning: Undefined variable $scalar_var in %s on line %d 361NULL 362bool(false) 363bool(false) 364bool(true) 365bool(false) 366bool(false) 367-- Iteration 2 -- 368bool(true) 369bool(true) 370bool(false) 371 372Warning: Undefined variable $scalar_var in %s on line %d 373NULL 374bool(false) 375bool(false) 376bool(true) 377bool(false) 378bool(false) 379-- Iteration 3 -- 380bool(true) 381bool(true) 382bool(true) 383 384Warning: Undefined variable $scalar_var in %s on line %d 385NULL 386bool(false) 387bool(false) 388bool(true) 389bool(false) 390bool(false) 391-- Iteration 4 -- 392bool(true) 393bool(true) 394bool(false) 395 396Warning: Undefined variable $scalar_var in %s on line %d 397NULL 398bool(false) 399bool(false) 400bool(true) 401bool(false) 402bool(false) 403-- Iteration 5 -- 404bool(true) 405bool(true) 406bool(false) 407 408Warning: Undefined variable $scalar_var in %s on line %d 409NULL 410bool(false) 411bool(false) 412bool(true) 413bool(false) 414bool(false) 415-- Iteration 6 -- 416bool(true) 417bool(true) 418bool(false) 419 420Warning: Undefined variable $scalar_var in %s on line %d 421NULL 422bool(false) 423bool(false) 424bool(true) 425bool(false) 426bool(false) 427-- Iteration 7 -- 428bool(true) 429bool(true) 430bool(false) 431 432Warning: Undefined variable $scalar_var in %s on line %d 433NULL 434bool(false) 435bool(false) 436bool(true) 437bool(false) 438bool(false) 439-- Iteration 8 -- 440bool(true) 441bool(true) 442bool(true) 443 444Warning: Undefined variable $scalar_var in %s on line %d 445NULL 446bool(false) 447bool(false) 448bool(true) 449bool(false) 450bool(false) 451-- Iteration 9 -- 452bool(true) 453bool(true) 454bool(false) 455 456Warning: Undefined variable $scalar_var in %s on line %d 457NULL 458bool(false) 459bool(false) 460bool(true) 461bool(false) 462bool(false) 463-- Iteration 10 -- 464bool(true) 465bool(true) 466bool(false) 467 468Warning: Undefined variable $scalar_var in %s on line %d 469NULL 470bool(false) 471bool(false) 472bool(true) 473bool(false) 474bool(false) 475-- Iteration 11 -- 476bool(true) 477bool(true) 478bool(false) 479 480Warning: Undefined variable $scalar_var in %s on line %d 481NULL 482bool(false) 483bool(false) 484bool(true) 485bool(false) 486bool(false) 487-- Iteration 12 -- 488bool(true) 489bool(true) 490bool(false) 491 492Warning: Undefined variable $scalar_var in %s on line %d 493NULL 494bool(false) 495bool(false) 496bool(true) 497bool(false) 498bool(false) 499-- Iteration 13 -- 500bool(true) 501bool(true) 502bool(true) 503 504Warning: Undefined variable $scalar_var in %s on line %d 505NULL 506bool(false) 507bool(false) 508bool(true) 509bool(false) 510bool(false) 511-- Iteration 14 -- 512bool(true) 513bool(true) 514bool(true) 515 516Warning: Undefined variable $scalar_var in %s on line %d 517NULL 518bool(false) 519bool(false) 520bool(true) 521bool(false) 522bool(false) 523-- Iteration 15 -- 524bool(true) 525bool(true) 526bool(false) 527 528Warning: Undefined variable $scalar_var in %s on line %d 529NULL 530bool(false) 531bool(false) 532bool(true) 533bool(false) 534bool(false) 535-- Iteration 16 -- 536bool(true) 537bool(true) 538bool(false) 539 540Warning: Undefined variable $scalar_var in %s on line %d 541NULL 542bool(false) 543bool(false) 544bool(true) 545bool(false) 546bool(false) 547-- Iteration 17 -- 548bool(true) 549bool(true) 550bool(false) 551 552Warning: Undefined variable $scalar_var in %s on line %d 553NULL 554bool(false) 555bool(false) 556bool(true) 557bool(false) 558bool(false) 559-- Iteration 18 -- 560bool(true) 561bool(true) 562bool(false) 563 564Warning: Undefined variable $scalar_var in %s on line %d 565NULL 566bool(false) 567bool(false) 568bool(true) 569bool(false) 570bool(false) 571-- Iteration 19 -- 572bool(true) 573bool(true) 574bool(true) 575 576Warning: Undefined variable $scalar_var in %s on line %d 577NULL 578bool(false) 579bool(false) 580bool(true) 581bool(false) 582bool(false) 583-- Iteration 20 -- 584bool(true) 585bool(true) 586bool(false) 587 588Warning: Undefined variable $scalar_var in %s on line %d 589NULL 590bool(false) 591bool(false) 592bool(true) 593bool(false) 594bool(false) 595-- Iteration 21 -- 596bool(true) 597bool(true) 598bool(false) 599 600Warning: Undefined variable $scalar_var in %s on line %d 601NULL 602bool(false) 603bool(false) 604bool(true) 605bool(false) 606bool(false) 607-- Iteration 22 -- 608bool(true) 609bool(true) 610bool(false) 611 612Warning: Undefined variable $scalar_var in %s on line %d 613NULL 614bool(false) 615bool(false) 616bool(true) 617bool(false) 618bool(false) 619-- Iteration 23 -- 620bool(true) 621bool(true) 622bool(false) 623 624Warning: Undefined variable $scalar_var in %s on line %d 625NULL 626bool(false) 627bool(false) 628bool(true) 629bool(false) 630bool(false) 631-- Iteration 24 -- 632bool(true) 633bool(true) 634bool(false) 635 636Warning: Undefined variable $scalar_var in %s on line %d 637NULL 638bool(false) 639bool(false) 640bool(true) 641bool(false) 642bool(false) 643-- Iteration 25 -- 644bool(true) 645bool(true) 646bool(true) 647 648Warning: Undefined variable $scalar_var in %s on line %d 649NULL 650bool(false) 651bool(false) 652bool(true) 653bool(false) 654bool(false) 655-- Iteration 26 -- 656bool(true) 657bool(true) 658bool(false) 659 660Warning: Undefined variable $scalar_var in %s on line %d 661NULL 662bool(false) 663bool(false) 664bool(true) 665bool(false) 666bool(false) 667-- Iteration 27 -- 668bool(true) 669bool(true) 670bool(true) 671 672Warning: Undefined variable $scalar_var in %s on line %d 673NULL 674bool(false) 675bool(false) 676bool(true) 677bool(false) 678bool(false) 679 680*** Testing unset(), empty() & isset() with arrays *** 681--- Outerloop Iteration 1 --- 682bool(false) 683bool(false) 684bool(false) 685bool(true) 686bool(true) 687bool(true) 688 689Warning: Undefined variable $array_var in %s on line %d 690NULL 691bool(false) 692bool(false) 693bool(true) 694--- Outerloop Iteration 2 --- 695bool(false) 696bool(false) 697bool(false) 698bool(true) 699bool(false) 700bool(true) 701-- Innerloop Iteration 1 of Outerloop Iteration 2 -- 702array(0) { 703} 704 705Warning: Undefined variable $key_val in %s on line %d 706bool(false) 707 708Warning: Undefined variable $key_val in %s on line %d 709bool(false) 710 711Warning: Undefined variable $key_val in %s on line %d 712bool(true) 713array(0) { 714} 715 716Warning: Undefined variable $array_var in %s on line %d 717NULL 718bool(false) 719bool(false) 720bool(true) 721--- Outerloop Iteration 3 --- 722bool(false) 723bool(false) 724bool(false) 725bool(true) 726bool(false) 727bool(true) 728-- Innerloop Iteration 1 of Outerloop Iteration 3 -- 729array(0) { 730} 731 732Warning: Undefined variable $key_val in %s on line %d 733bool(false) 734 735Warning: Undefined variable $key_val in %s on line %d 736bool(false) 737 738Warning: Undefined variable $key_val in %s on line %d 739bool(true) 740array(0) { 741} 742 743Warning: Undefined variable $array_var in %s on line %d 744NULL 745bool(false) 746bool(false) 747bool(true) 748--- Outerloop Iteration 4 --- 749bool(false) 750bool(false) 751bool(false) 752bool(true) 753bool(false) 754bool(true) 755-- Innerloop Iteration 1 of Outerloop Iteration 4 -- 756array(0) { 757} 758 759Warning: Undefined variable $key_val in %s on line %d 760bool(false) 761 762Warning: Undefined variable $key_val in %s on line %d 763bool(false) 764 765Warning: Undefined variable $key_val in %s on line %d 766bool(true) 767array(0) { 768} 769 770Warning: Undefined variable $array_var in %s on line %d 771NULL 772bool(false) 773bool(false) 774bool(true) 775--- Outerloop Iteration 5 --- 776bool(false) 777bool(false) 778bool(false) 779bool(true) 780bool(false) 781bool(true) 782-- Innerloop Iteration 1 of Outerloop Iteration 5 -- 783array(0) { 784} 785 786Warning: Undefined variable $key_val in %s on line %d 787bool(false) 788 789Warning: Undefined variable $key_val in %s on line %d 790bool(false) 791 792Warning: Undefined variable $key_val in %s on line %d 793bool(true) 794array(0) { 795} 796 797Warning: Undefined variable $array_var in %s on line %d 798NULL 799bool(false) 800bool(false) 801bool(true) 802--- Outerloop Iteration 6 --- 803bool(false) 804bool(false) 805bool(false) 806bool(true) 807bool(false) 808bool(true) 809-- Innerloop Iteration 1 of Outerloop Iteration 6 -- 810array(3) { 811 [1]=> 812 int(2) 813 [2]=> 814 int(3) 815 [3]=> 816 int(4) 817} 818 819Warning: Undefined variable $key_val in %s on line %d 820bool(false) 821 822Warning: Undefined variable $key_val in %s on line %d 823bool(false) 824 825Warning: Undefined variable $key_val in %s on line %d 826bool(true) 827array(3) { 828 [1]=> 829 int(2) 830 [2]=> 831 int(3) 832 [3]=> 833 int(4) 834} 835-- Innerloop Iteration 2 of Outerloop Iteration 6 -- 836array(2) { 837 [2]=> 838 int(3) 839 [3]=> 840 int(4) 841} 842 843Warning: Undefined variable $key_val in %s on line %d 844bool(false) 845 846Warning: Undefined variable $key_val in %s on line %d 847bool(false) 848 849Warning: Undefined variable $key_val in %s on line %d 850bool(true) 851array(2) { 852 [2]=> 853 int(3) 854 [3]=> 855 int(4) 856} 857-- Innerloop Iteration 3 of Outerloop Iteration 6 -- 858array(1) { 859 [3]=> 860 int(4) 861} 862 863Warning: Undefined variable $key_val in %s on line %d 864bool(false) 865 866Warning: Undefined variable $key_val in %s on line %d 867bool(false) 868 869Warning: Undefined variable $key_val in %s on line %d 870bool(true) 871array(1) { 872 [3]=> 873 int(4) 874} 875-- Innerloop Iteration 4 of Outerloop Iteration 6 -- 876array(0) { 877} 878 879Warning: Undefined variable $key_val in %s on line %d 880bool(false) 881 882Warning: Undefined variable $key_val in %s on line %d 883bool(false) 884 885Warning: Undefined variable $key_val in %s on line %d 886bool(true) 887array(0) { 888} 889 890Warning: Undefined variable $array_var in %s on line %d 891NULL 892bool(false) 893bool(false) 894bool(true) 895--- Outerloop Iteration 7 --- 896bool(false) 897bool(false) 898bool(false) 899bool(true) 900bool(false) 901bool(true) 902-- Innerloop Iteration 1 of Outerloop Iteration 7 -- 903array(2) { 904 [1]=> 905 float(2.5) 906 [2]=> 907 float(5.6) 908} 909 910Warning: Undefined variable $key_val in %s on line %d 911bool(false) 912 913Warning: Undefined variable $key_val in %s on line %d 914bool(false) 915 916Warning: Undefined variable $key_val in %s on line %d 917bool(true) 918array(2) { 919 [1]=> 920 float(2.5) 921 [2]=> 922 float(5.6) 923} 924-- Innerloop Iteration 2 of Outerloop Iteration 7 -- 925array(1) { 926 [2]=> 927 float(5.6) 928} 929 930Warning: Undefined variable $key_val in %s on line %d 931bool(false) 932 933Warning: Undefined variable $key_val in %s on line %d 934bool(false) 935 936Warning: Undefined variable $key_val in %s on line %d 937bool(true) 938array(1) { 939 [2]=> 940 float(5.6) 941} 942-- Innerloop Iteration 3 of Outerloop Iteration 7 -- 943array(0) { 944} 945 946Warning: Undefined variable $key_val in %s on line %d 947bool(false) 948 949Warning: Undefined variable $key_val in %s on line %d 950bool(false) 951 952Warning: Undefined variable $key_val in %s on line %d 953bool(true) 954array(0) { 955} 956 957Warning: Undefined variable $array_var in %s on line %d 958NULL 959bool(false) 960bool(false) 961bool(true) 962--- Outerloop Iteration 8 --- 963bool(false) 964bool(false) 965bool(false) 966bool(true) 967bool(false) 968bool(true) 969-- Innerloop Iteration 1 of Outerloop Iteration 8 -- 970array(1) { 971 [2]=> 972 string(3) "two" 973} 974 975Warning: Undefined variable $key_val in %s on line %d 976bool(false) 977 978Warning: Undefined variable $key_val in %s on line %d 979bool(false) 980 981Warning: Undefined variable $key_val in %s on line %d 982bool(true) 983array(1) { 984 [2]=> 985 string(3) "two" 986} 987-- Innerloop Iteration 2 of Outerloop Iteration 8 -- 988array(0) { 989} 990 991Warning: Undefined variable $key_val in %s on line %d 992bool(false) 993 994Warning: Undefined variable $key_val in %s on line %d 995bool(false) 996 997Warning: Undefined variable $key_val in %s on line %d 998bool(true) 999array(0) { 1000} 1001 1002Warning: Undefined variable $array_var in %s on line %d 1003NULL 1004bool(false) 1005bool(false) 1006bool(true) 1007--- Outerloop Iteration 9 --- 1008bool(false) 1009bool(false) 1010bool(false) 1011bool(true) 1012bool(false) 1013bool(true) 1014-- Innerloop Iteration 1 of Outerloop Iteration 9 -- 1015array(1) { 1016 ["Age"]=> 1017 string(2) "30" 1018} 1019 1020Warning: Undefined variable $key_val in %s on line %d 1021bool(false) 1022 1023Warning: Undefined variable $key_val in %s on line %d 1024bool(false) 1025 1026Warning: Undefined variable $key_val in %s on line %d 1027bool(true) 1028array(1) { 1029 ["Age"]=> 1030 string(2) "30" 1031} 1032-- Innerloop Iteration 2 of Outerloop Iteration 9 -- 1033array(0) { 1034} 1035 1036Warning: Undefined variable $key_val in %s on line %d 1037bool(false) 1038 1039Warning: Undefined variable $key_val in %s on line %d 1040bool(false) 1041 1042Warning: Undefined variable $key_val in %s on line %d 1043bool(true) 1044array(0) { 1045} 1046 1047Warning: Undefined variable $array_var in %s on line %d 1048NULL 1049bool(false) 1050bool(false) 1051bool(true) 1052--- Outerloop Iteration 10 --- 1053bool(false) 1054bool(false) 1055bool(false) 1056bool(true) 1057bool(false) 1058bool(true) 1059-- Innerloop Iteration 1 of Outerloop Iteration 10 -- 1060array(4) { 1061 [1]=> 1062 int(2) 1063 ["One"]=> 1064 string(1) "1" 1065 [2]=> 1066 string(3) "two" 1067 [""]=> 1068 string(0) "" 1069} 1070 1071Warning: Undefined variable $key_val in %s on line %d 1072bool(true) 1073 1074Warning: Undefined variable $key_val in %s on line %d 1075bool(true) 1076 1077Warning: Undefined variable $key_val in %s on line %d 1078bool(true) 1079array(4) { 1080 [1]=> 1081 int(2) 1082 ["One"]=> 1083 string(1) "1" 1084 [2]=> 1085 string(3) "two" 1086 [""]=> 1087 string(0) "" 1088} 1089-- Innerloop Iteration 2 of Outerloop Iteration 10 -- 1090array(3) { 1091 ["One"]=> 1092 string(1) "1" 1093 [2]=> 1094 string(3) "two" 1095 [""]=> 1096 string(0) "" 1097} 1098 1099Warning: Undefined variable $key_val in %s on line %d 1100bool(true) 1101 1102Warning: Undefined variable $key_val in %s on line %d 1103bool(true) 1104 1105Warning: Undefined variable $key_val in %s on line %d 1106bool(true) 1107array(3) { 1108 ["One"]=> 1109 string(1) "1" 1110 [2]=> 1111 string(3) "two" 1112 [""]=> 1113 string(0) "" 1114} 1115-- Innerloop Iteration 3 of Outerloop Iteration 10 -- 1116array(2) { 1117 [2]=> 1118 string(3) "two" 1119 [""]=> 1120 string(0) "" 1121} 1122 1123Warning: Undefined variable $key_val in %s on line %d 1124bool(true) 1125 1126Warning: Undefined variable $key_val in %s on line %d 1127bool(true) 1128 1129Warning: Undefined variable $key_val in %s on line %d 1130bool(true) 1131array(2) { 1132 [2]=> 1133 string(3) "two" 1134 [""]=> 1135 string(0) "" 1136} 1137-- Innerloop Iteration 4 of Outerloop Iteration 10 -- 1138array(1) { 1139 [""]=> 1140 string(0) "" 1141} 1142 1143Warning: Undefined variable $key_val in %s on line %d 1144bool(true) 1145 1146Warning: Undefined variable $key_val in %s on line %d 1147bool(true) 1148 1149Warning: Undefined variable $key_val in %s on line %d 1150bool(true) 1151array(1) { 1152 [""]=> 1153 string(0) "" 1154} 1155-- Innerloop Iteration 5 of Outerloop Iteration 10 -- 1156array(0) { 1157} 1158 1159Warning: Undefined variable $key_val in %s on line %d 1160bool(false) 1161 1162Warning: Undefined variable $key_val in %s on line %d 1163bool(false) 1164 1165Warning: Undefined variable $key_val in %s on line %d 1166bool(true) 1167array(0) { 1168} 1169 1170Warning: Undefined variable $array_var in %s on line %d 1171NULL 1172bool(false) 1173bool(false) 1174bool(true) 1175 1176*** Testing unset(), empty() & isset() with resource variables *** 1177-- Iteration 1 -- 1178resource(%d) of type (stream) 1179bool(true) 1180bool(false) 1181bool(true) 1182resource(%d) of type (stream) 1183bool(false) 1184bool(true) 1185bool(false) 1186bool(false) 1187 1188Warning: Undefined variable $resource in %s on line %d 1189NULL 1190-- Iteration 2 -- 1191resource(%d) of type (stream) 1192bool(true) 1193bool(false) 1194bool(true) 1195resource(%d) of type (stream) 1196bool(false) 1197bool(true) 1198bool(false) 1199bool(false) 1200 1201Warning: Undefined variable $resource in %s on line %d 1202NULL 1203 1204Warning: Undefined variable $resources in %s on line %d 1205NULL 1206bool(false) 1207bool(true) 1208 1209*** Testing unset(), empty() & isset() with objects *** 1210object(Point)#%d (3) { 1211 ["x"]=> 1212 int(30) 1213 ["y"]=> 1214 int(40) 1215 ["lable"]=> 1216 NULL 1217} 1218bool(true) 1219bool(false) 1220 1221Warning: Undefined variable $lable in %s on line %d 1222bool(false) 1223 1224Warning: Undefined variable $lable in %s on line %d 1225bool(true) 1226 1227Warning: Undefined variable $lable in %s on line %d 1228bool(false) 1229 1230Warning: Undefined variable $lable in %s on line %d 1231bool(true) 1232object(Point)#%d (3) { 1233 ["x"]=> 1234 int(30) 1235 ["y"]=> 1236 int(40) 1237 ["lable"]=> 1238 string(6) "Point1" 1239} 1240object(Point)#%d (2) { 1241 ["y"]=> 1242 int(40) 1243 ["lable"]=> 1244 string(6) "Point1" 1245} 1246bool(false) 1247bool(true) 1248object(Point)#%d (0) { 1249} 1250bool(true) 1251bool(false) 1252bool(false) 1253bool(true) 1254 1255Warning: Undefined variable $point1 in %s on line %d 1256NULL 1257bool(false) 1258bool(true) 1259bool(false) 1260bool(true) 1261array(3) { 1262 [0]=> 1263 string(11) "__construct" 1264 [1]=> 1265 string(8) "setLable" 1266 [2]=> 1267 string(9) "testPoint" 1268} 1269object(Point)#%d (3) { 1270 ["x"]=> 1271 int(5) 1272 ["y"]=> 1273 int(6) 1274 ["lable"]=> 1275 NULL 1276} 1277 1278*** Testing possible variation in operation for isset(), empty() & unset() *** 1279 1280** Testing unset() variation 1: unset on static variable inside a function ** 1281value of static_var before unset: 1 1282bool(true) 1283bool(false) 1284 1285Warning: Undefined variable $static_var in %s on line %d 1286value of static_var after unset: 1287bool(false) 1288bool(true) 1289value of static_var after new assignment: 20 1290value of static_var before unset: 2 1291bool(true) 1292bool(false) 1293 1294Warning: Undefined variable $static_var in %s on line %d 1295value of static_var after unset: 1296bool(false) 1297bool(true) 1298value of static_var after new assignment: 20 1299value of static_var before unset: 3 1300bool(true) 1301bool(false) 1302 1303Warning: Undefined variable $static_var in %s on line %d 1304value of static_var after unset: 1305bool(false) 1306bool(true) 1307value of static_var after new assignment: 20 1308 1309** Testing unset() variation 2: unset on a variable passed by ref. inside of a function ** 1310string(5) "value" 1311bool(false) 1312bool(true) 1313string(5) "value" 1314 1315** Testing unset() variation 3: unset on a global variable inside of a function ** 1316int(10) 1317bool(true) 1318bool(false) 1319bool(false) 1320bool(true) 1321int(10) 1322
