1--TEST-- 2Test key(), current(), next() & reset() functions 3--FILE-- 4<?php 5 6$basic_arrays = array ( 7 array(0), // array with element as 0 8 array(1), // array with single element 9 array(1,2, 3, -1, -2, -3), // array of integers 10 array(1.1, 2.2, 3.3, -1.1, -2.2, -3.3), // array of floats 11 array('a', 'b', 'c', "ab", "ac", "ad"), // string array 12 array("a" => "apple", "b" => "book", "c" => "cook"), // associative array 13 array('d' => 'drink', 'p' => 'port', 's' => 'set'), // another associative array 14 array(1 => 'One', 2 => 'two', 3 => "three") // associative array with key as integers 15); 16 17$varient_arrays = array ( 18 array(), // empty array 19 array(""), // array with null string 20 array(NULL),// array with NULL 21 array(null),// array with null 22 array(NULL, true, null, "", 1), // mixed array 23 array(-1 => "test", -2 => "rest", 2 => "two", 24 "" => "string", 0 => "zero", "" => "" ) // mixed array 25); 26 27echo "*** Testing basic operations ***\n"; 28$loop_count = 1; 29foreach ($basic_arrays as $sub_array ) { 30 echo "-- Iteration $loop_count --\n"; 31 $loop_count++; 32 $c = count ($sub_array); 33 $c++; // increment by one to create the situation of accessing beyond array size 34 while ( $c ) { 35 var_dump( current($sub_array)); // current element 36 var_dump( key($sub_array) ); // key of the current element 37 var_dump( next($sub_array) ); // move to next element 38 $c --; 39 } 40 var_dump( reset($sub_array) ); // reset the internal pointer to first element 41 var_dump( key($sub_array) ); // access the array after reset 42 var_dump( $sub_array ); // dump the array to see that its intact 43 44 echo "\n"; 45} 46 47echo "\n*** Testing possible variations ***\n"; 48$loop_count = 1; 49foreach ($varient_arrays as $sub_array ) { 50 echo "-- Iteration $loop_count --\n"; 51 $loop_count++; 52 $c = count ($sub_array); 53 $c++; // increment by one to create the situation of accessing beyond array size 54 while ( $c ) { 55 var_dump( current($sub_array)); // current element 56 var_dump( key($sub_array) ); // key of the current element 57 var_dump( next($sub_array) ); // move to next element 58 $c --; 59 } 60 var_dump( reset($sub_array) ); // reset the internal pointer to first element 61 var_dump( key($sub_array) ); // access the array after reset 62 var_dump( $sub_array ); // dump the array to see that its intact 63 echo "\n"; 64} 65 66echo "Done\n"; 67?> 68--EXPECT-- 69*** Testing basic operations *** 70-- Iteration 1 -- 71int(0) 72int(0) 73bool(false) 74bool(false) 75NULL 76bool(false) 77int(0) 78int(0) 79array(1) { 80 [0]=> 81 int(0) 82} 83 84-- Iteration 2 -- 85int(1) 86int(0) 87bool(false) 88bool(false) 89NULL 90bool(false) 91int(1) 92int(0) 93array(1) { 94 [0]=> 95 int(1) 96} 97 98-- Iteration 3 -- 99int(1) 100int(0) 101int(2) 102int(2) 103int(1) 104int(3) 105int(3) 106int(2) 107int(-1) 108int(-1) 109int(3) 110int(-2) 111int(-2) 112int(4) 113int(-3) 114int(-3) 115int(5) 116bool(false) 117bool(false) 118NULL 119bool(false) 120int(1) 121int(0) 122array(6) { 123 [0]=> 124 int(1) 125 [1]=> 126 int(2) 127 [2]=> 128 int(3) 129 [3]=> 130 int(-1) 131 [4]=> 132 int(-2) 133 [5]=> 134 int(-3) 135} 136 137-- Iteration 4 -- 138float(1.1) 139int(0) 140float(2.2) 141float(2.2) 142int(1) 143float(3.3) 144float(3.3) 145int(2) 146float(-1.1) 147float(-1.1) 148int(3) 149float(-2.2) 150float(-2.2) 151int(4) 152float(-3.3) 153float(-3.3) 154int(5) 155bool(false) 156bool(false) 157NULL 158bool(false) 159float(1.1) 160int(0) 161array(6) { 162 [0]=> 163 float(1.1) 164 [1]=> 165 float(2.2) 166 [2]=> 167 float(3.3) 168 [3]=> 169 float(-1.1) 170 [4]=> 171 float(-2.2) 172 [5]=> 173 float(-3.3) 174} 175 176-- Iteration 5 -- 177string(1) "a" 178int(0) 179string(1) "b" 180string(1) "b" 181int(1) 182string(1) "c" 183string(1) "c" 184int(2) 185string(2) "ab" 186string(2) "ab" 187int(3) 188string(2) "ac" 189string(2) "ac" 190int(4) 191string(2) "ad" 192string(2) "ad" 193int(5) 194bool(false) 195bool(false) 196NULL 197bool(false) 198string(1) "a" 199int(0) 200array(6) { 201 [0]=> 202 string(1) "a" 203 [1]=> 204 string(1) "b" 205 [2]=> 206 string(1) "c" 207 [3]=> 208 string(2) "ab" 209 [4]=> 210 string(2) "ac" 211 [5]=> 212 string(2) "ad" 213} 214 215-- Iteration 6 -- 216string(5) "apple" 217string(1) "a" 218string(4) "book" 219string(4) "book" 220string(1) "b" 221string(4) "cook" 222string(4) "cook" 223string(1) "c" 224bool(false) 225bool(false) 226NULL 227bool(false) 228string(5) "apple" 229string(1) "a" 230array(3) { 231 ["a"]=> 232 string(5) "apple" 233 ["b"]=> 234 string(4) "book" 235 ["c"]=> 236 string(4) "cook" 237} 238 239-- Iteration 7 -- 240string(5) "drink" 241string(1) "d" 242string(4) "port" 243string(4) "port" 244string(1) "p" 245string(3) "set" 246string(3) "set" 247string(1) "s" 248bool(false) 249bool(false) 250NULL 251bool(false) 252string(5) "drink" 253string(1) "d" 254array(3) { 255 ["d"]=> 256 string(5) "drink" 257 ["p"]=> 258 string(4) "port" 259 ["s"]=> 260 string(3) "set" 261} 262 263-- Iteration 8 -- 264string(3) "One" 265int(1) 266string(3) "two" 267string(3) "two" 268int(2) 269string(5) "three" 270string(5) "three" 271int(3) 272bool(false) 273bool(false) 274NULL 275bool(false) 276string(3) "One" 277int(1) 278array(3) { 279 [1]=> 280 string(3) "One" 281 [2]=> 282 string(3) "two" 283 [3]=> 284 string(5) "three" 285} 286 287 288*** Testing possible variations *** 289-- Iteration 1 -- 290bool(false) 291NULL 292bool(false) 293bool(false) 294NULL 295array(0) { 296} 297 298-- Iteration 2 -- 299string(0) "" 300int(0) 301bool(false) 302bool(false) 303NULL 304bool(false) 305string(0) "" 306int(0) 307array(1) { 308 [0]=> 309 string(0) "" 310} 311 312-- Iteration 3 -- 313NULL 314int(0) 315bool(false) 316bool(false) 317NULL 318bool(false) 319NULL 320int(0) 321array(1) { 322 [0]=> 323 NULL 324} 325 326-- Iteration 4 -- 327NULL 328int(0) 329bool(false) 330bool(false) 331NULL 332bool(false) 333NULL 334int(0) 335array(1) { 336 [0]=> 337 NULL 338} 339 340-- Iteration 5 -- 341NULL 342int(0) 343bool(true) 344bool(true) 345int(1) 346NULL 347NULL 348int(2) 349string(0) "" 350string(0) "" 351int(3) 352int(1) 353int(1) 354int(4) 355bool(false) 356bool(false) 357NULL 358bool(false) 359NULL 360int(0) 361array(5) { 362 [0]=> 363 NULL 364 [1]=> 365 bool(true) 366 [2]=> 367 NULL 368 [3]=> 369 string(0) "" 370 [4]=> 371 int(1) 372} 373 374-- Iteration 6 -- 375string(4) "test" 376int(-1) 377string(4) "rest" 378string(4) "rest" 379int(-2) 380string(3) "two" 381string(3) "two" 382int(2) 383string(0) "" 384string(0) "" 385string(0) "" 386string(4) "zero" 387string(4) "zero" 388int(0) 389bool(false) 390bool(false) 391NULL 392bool(false) 393string(4) "test" 394int(-1) 395array(5) { 396 [-1]=> 397 string(4) "test" 398 [-2]=> 399 string(4) "rest" 400 [2]=> 401 string(3) "two" 402 [""]=> 403 string(0) "" 404 [0]=> 405 string(4) "zero" 406} 407 408Done 409
