1--TEST-- 2Test fread() function : usage variations - read some/all chars, write only mode (Bug #42036) 3--FILE-- 4<?php 5/* 6 Prototype: string fread ( resource $handle [, int $length] ); 7 Description: reads up to length bytes from the file pointer referenced by handle. 8 Reading stops when up to length bytes have been read, EOF (end of file) is 9 reached, (for network streams) when a packet becomes available, or (after 10 opening userspace stream) when 8192 bytes have been read whichever comes first. 11*/ 12 13/* Try reading some or all content of the file opened in write only mode */ 14 15// include the file.inc for common functions for test 16include ("file.inc"); 17 18/* Function : function check_read(resource $file_handle, int $read_size, int $expect_size) 19 Description : Read data from file of size $read_size and verifies that $expected_size no. of 20 bytes are read. 21 $file_handle : File Handle 22 $read_size : No. of bytes to be read. 23 $expect_size : Expected data length 24 Returns: returns the data read 25*/ 26function check_read($file_handle, $read_size, $expect_size) { 27 // print file pointer position before read 28 var_dump( ftell($file_handle) ); 29 var_dump( feof($file_handle) ); 30 31 // read the data of size $read_size 32 echo "Reading $read_size bytes from file, expecting $expect_size bytes ... "; 33 $data_from_file = fread($file_handle, $read_size); 34 35 // check if data read is of expected size 36 if ( strlen($data_from_file) == $expect_size) 37 echo "OK\n"; 38 else 39 echo "Error reading file, total number of bytes read = ".strlen($data_from_file)."\n"; 40 41 // file pointer position after read 42 var_dump( ftell($file_handle) ); 43 // check if file pointer at eof() 44 var_dump( feof($file_handle) ); 45 echo "\n"; 46 47 return $data_from_file; 48} 49 50echo "*** Testing fread() : usage variations ***\n"; 51 52$file_modes = array("a","ab","at", 53 "w","wb","wt", 54 "x","xb","xt" ); 55 56$file_content_types = array("numeric","text","text_with_new_line", "alphanumeric"); 57 58foreach($file_content_types as $file_content_type) { 59 echo "\n-- Testing fread() with file having content of type ". $file_content_type ." --\n"; 60 61 /* open the file using $files_modes and perform fread() on it */ 62 foreach($file_modes as $file_mode) { 63 if(!strstr($file_mode,"x")){ 64 /* create files with $file_content_type */ 65 create_files ( dirname(__FILE__), 1, $file_content_type, 0755, 1, "w", "fread_variation", 2); 66 } 67 68 $filename = dirname(__FILE__)."/fread_variation2.tmp"; // this is name of the file created by create_files() 69 echo "-- File opened in mode ".$file_mode." --\n"; 70 $file_handle = fopen($filename, $file_mode); 71 if (!$file_handle) { 72 echo "Error: failed to fopen() file: $filename!"; 73 exit(); 74 } 75 76 if(strstr($file_mode,"w") || strstr($file_mode,"x") ) { 77 fill_file($file_handle, $file_content_type, 1024); 78 } 79 80 rewind($file_handle); 81 echo "-- Reading entire file content, expeceted : 0 bytes --\n"; 82 // read from file, by giving the file actual size, 83 $data_from_file = check_read($file_handle, 1024, (strstr($file_mode, "+") ? 1024 : 0 ) ); 84 // calculate the hash and dump it, if data read, expecting here no data was read 85 if ( $data_from_file != false) 86 var_dump( md5($data_from_file) ); 87 88 // reading file by giving less than its size 89 echo "-- Reading file content less than max. file size, expeceted : 0 bytes --\n"; 90 rewind($file_handle); 91 $data_from_file = check_read($file_handle, 1000, (strstr($file_mode, "+") ? 1000 : 0 ) ); 92 // calculate the hash and dump it, if data read, expecting here no data was read 93 if ( $data_from_file != false) 94 var_dump( md5($data_from_file) ); 95 96 // now close the file 97 fclose($file_handle); 98 99 // delete the file created 100 delete_file($filename); // delete file 101 } // end of inner foreach loop 102}// end of outer foreach loop 103 104echo "Done\n"; 105?> 106--EXPECTF-- 107*** Testing fread() : usage variations *** 108 109-- Testing fread() with file having content of type numeric -- 110-- File opened in mode a -- 111-- Reading entire file content, expeceted : 0 bytes -- 112int(0) 113bool(false) 114Reading 1024 bytes from file, expecting 0 bytes ... OK 115int(0) 116bool(false) 117 118-- Reading file content less than max. file size, expeceted : 0 bytes -- 119int(0) 120bool(false) 121Reading 1000 bytes from file, expecting 0 bytes ... OK 122int(0) 123bool(false) 124 125-- File opened in mode ab -- 126-- Reading entire file content, expeceted : 0 bytes -- 127int(0) 128bool(false) 129Reading 1024 bytes from file, expecting 0 bytes ... OK 130int(0) 131bool(false) 132 133-- Reading file content less than max. file size, expeceted : 0 bytes -- 134int(0) 135bool(false) 136Reading 1000 bytes from file, expecting 0 bytes ... OK 137int(0) 138bool(false) 139 140-- File opened in mode at -- 141-- Reading entire file content, expeceted : 0 bytes -- 142int(0) 143bool(false) 144Reading 1024 bytes from file, expecting 0 bytes ... OK 145int(0) 146bool(false) 147 148-- Reading file content less than max. file size, expeceted : 0 bytes -- 149int(0) 150bool(false) 151Reading 1000 bytes from file, expecting 0 bytes ... OK 152int(0) 153bool(false) 154 155-- File opened in mode w -- 156-- Reading entire file content, expeceted : 0 bytes -- 157int(0) 158bool(false) 159Reading 1024 bytes from file, expecting 0 bytes ... OK 160int(0) 161bool(false) 162 163-- Reading file content less than max. file size, expeceted : 0 bytes -- 164int(0) 165bool(false) 166Reading 1000 bytes from file, expecting 0 bytes ... OK 167int(0) 168bool(false) 169 170-- File opened in mode wb -- 171-- Reading entire file content, expeceted : 0 bytes -- 172int(0) 173bool(false) 174Reading 1024 bytes from file, expecting 0 bytes ... OK 175int(0) 176bool(false) 177 178-- Reading file content less than max. file size, expeceted : 0 bytes -- 179int(0) 180bool(false) 181Reading 1000 bytes from file, expecting 0 bytes ... OK 182int(0) 183bool(false) 184 185-- File opened in mode wt -- 186-- Reading entire file content, expeceted : 0 bytes -- 187int(0) 188bool(false) 189Reading 1024 bytes from file, expecting 0 bytes ... OK 190int(0) 191bool(false) 192 193-- Reading file content less than max. file size, expeceted : 0 bytes -- 194int(0) 195bool(false) 196Reading 1000 bytes from file, expecting 0 bytes ... OK 197int(0) 198bool(false) 199 200-- File opened in mode x -- 201-- Reading entire file content, expeceted : 0 bytes -- 202int(0) 203bool(false) 204Reading 1024 bytes from file, expecting 0 bytes ... OK 205int(0) 206bool(false) 207 208-- Reading file content less than max. file size, expeceted : 0 bytes -- 209int(0) 210bool(false) 211Reading 1000 bytes from file, expecting 0 bytes ... OK 212int(0) 213bool(false) 214 215-- File opened in mode xb -- 216-- Reading entire file content, expeceted : 0 bytes -- 217int(0) 218bool(false) 219Reading 1024 bytes from file, expecting 0 bytes ... OK 220int(0) 221bool(false) 222 223-- Reading file content less than max. file size, expeceted : 0 bytes -- 224int(0) 225bool(false) 226Reading 1000 bytes from file, expecting 0 bytes ... OK 227int(0) 228bool(false) 229 230-- File opened in mode xt -- 231-- Reading entire file content, expeceted : 0 bytes -- 232int(0) 233bool(false) 234Reading 1024 bytes from file, expecting 0 bytes ... OK 235int(0) 236bool(false) 237 238-- Reading file content less than max. file size, expeceted : 0 bytes -- 239int(0) 240bool(false) 241Reading 1000 bytes from file, expecting 0 bytes ... OK 242int(0) 243bool(false) 244 245 246-- Testing fread() with file having content of type text -- 247-- File opened in mode a -- 248-- Reading entire file content, expeceted : 0 bytes -- 249int(0) 250bool(false) 251Reading 1024 bytes from file, expecting 0 bytes ... OK 252int(0) 253bool(false) 254 255-- Reading file content less than max. file size, expeceted : 0 bytes -- 256int(0) 257bool(false) 258Reading 1000 bytes from file, expecting 0 bytes ... OK 259int(0) 260bool(false) 261 262-- File opened in mode ab -- 263-- Reading entire file content, expeceted : 0 bytes -- 264int(0) 265bool(false) 266Reading 1024 bytes from file, expecting 0 bytes ... OK 267int(0) 268bool(false) 269 270-- Reading file content less than max. file size, expeceted : 0 bytes -- 271int(0) 272bool(false) 273Reading 1000 bytes from file, expecting 0 bytes ... OK 274int(0) 275bool(false) 276 277-- File opened in mode at -- 278-- Reading entire file content, expeceted : 0 bytes -- 279int(0) 280bool(false) 281Reading 1024 bytes from file, expecting 0 bytes ... OK 282int(0) 283bool(false) 284 285-- Reading file content less than max. file size, expeceted : 0 bytes -- 286int(0) 287bool(false) 288Reading 1000 bytes from file, expecting 0 bytes ... OK 289int(0) 290bool(false) 291 292-- File opened in mode w -- 293-- Reading entire file content, expeceted : 0 bytes -- 294int(0) 295bool(false) 296Reading 1024 bytes from file, expecting 0 bytes ... OK 297int(0) 298bool(false) 299 300-- Reading file content less than max. file size, expeceted : 0 bytes -- 301int(0) 302bool(false) 303Reading 1000 bytes from file, expecting 0 bytes ... OK 304int(0) 305bool(false) 306 307-- File opened in mode wb -- 308-- Reading entire file content, expeceted : 0 bytes -- 309int(0) 310bool(false) 311Reading 1024 bytes from file, expecting 0 bytes ... OK 312int(0) 313bool(false) 314 315-- Reading file content less than max. file size, expeceted : 0 bytes -- 316int(0) 317bool(false) 318Reading 1000 bytes from file, expecting 0 bytes ... OK 319int(0) 320bool(false) 321 322-- File opened in mode wt -- 323-- Reading entire file content, expeceted : 0 bytes -- 324int(0) 325bool(false) 326Reading 1024 bytes from file, expecting 0 bytes ... OK 327int(0) 328bool(false) 329 330-- Reading file content less than max. file size, expeceted : 0 bytes -- 331int(0) 332bool(false) 333Reading 1000 bytes from file, expecting 0 bytes ... OK 334int(0) 335bool(false) 336 337-- File opened in mode x -- 338-- Reading entire file content, expeceted : 0 bytes -- 339int(0) 340bool(false) 341Reading 1024 bytes from file, expecting 0 bytes ... OK 342int(0) 343bool(false) 344 345-- Reading file content less than max. file size, expeceted : 0 bytes -- 346int(0) 347bool(false) 348Reading 1000 bytes from file, expecting 0 bytes ... OK 349int(0) 350bool(false) 351 352-- File opened in mode xb -- 353-- Reading entire file content, expeceted : 0 bytes -- 354int(0) 355bool(false) 356Reading 1024 bytes from file, expecting 0 bytes ... OK 357int(0) 358bool(false) 359 360-- Reading file content less than max. file size, expeceted : 0 bytes -- 361int(0) 362bool(false) 363Reading 1000 bytes from file, expecting 0 bytes ... OK 364int(0) 365bool(false) 366 367-- File opened in mode xt -- 368-- Reading entire file content, expeceted : 0 bytes -- 369int(0) 370bool(false) 371Reading 1024 bytes from file, expecting 0 bytes ... OK 372int(0) 373bool(false) 374 375-- Reading file content less than max. file size, expeceted : 0 bytes -- 376int(0) 377bool(false) 378Reading 1000 bytes from file, expecting 0 bytes ... OK 379int(0) 380bool(false) 381 382 383-- Testing fread() with file having content of type text_with_new_line -- 384-- File opened in mode a -- 385-- Reading entire file content, expeceted : 0 bytes -- 386int(0) 387bool(false) 388Reading 1024 bytes from file, expecting 0 bytes ... OK 389int(0) 390bool(false) 391 392-- Reading file content less than max. file size, expeceted : 0 bytes -- 393int(0) 394bool(false) 395Reading 1000 bytes from file, expecting 0 bytes ... OK 396int(0) 397bool(false) 398 399-- File opened in mode ab -- 400-- Reading entire file content, expeceted : 0 bytes -- 401int(0) 402bool(false) 403Reading 1024 bytes from file, expecting 0 bytes ... OK 404int(0) 405bool(false) 406 407-- Reading file content less than max. file size, expeceted : 0 bytes -- 408int(0) 409bool(false) 410Reading 1000 bytes from file, expecting 0 bytes ... OK 411int(0) 412bool(false) 413 414-- File opened in mode at -- 415-- Reading entire file content, expeceted : 0 bytes -- 416int(0) 417bool(false) 418Reading 1024 bytes from file, expecting 0 bytes ... OK 419int(0) 420bool(false) 421 422-- Reading file content less than max. file size, expeceted : 0 bytes -- 423int(0) 424bool(false) 425Reading 1000 bytes from file, expecting 0 bytes ... OK 426int(0) 427bool(false) 428 429-- File opened in mode w -- 430-- Reading entire file content, expeceted : 0 bytes -- 431int(0) 432bool(false) 433Reading 1024 bytes from file, expecting 0 bytes ... OK 434int(0) 435bool(false) 436 437-- Reading file content less than max. file size, expeceted : 0 bytes -- 438int(0) 439bool(false) 440Reading 1000 bytes from file, expecting 0 bytes ... OK 441int(0) 442bool(false) 443 444-- File opened in mode wb -- 445-- Reading entire file content, expeceted : 0 bytes -- 446int(0) 447bool(false) 448Reading 1024 bytes from file, expecting 0 bytes ... OK 449int(0) 450bool(false) 451 452-- Reading file content less than max. file size, expeceted : 0 bytes -- 453int(0) 454bool(false) 455Reading 1000 bytes from file, expecting 0 bytes ... OK 456int(0) 457bool(false) 458 459-- File opened in mode wt -- 460-- Reading entire file content, expeceted : 0 bytes -- 461int(0) 462bool(false) 463Reading 1024 bytes from file, expecting 0 bytes ... OK 464int(0) 465bool(false) 466 467-- Reading file content less than max. file size, expeceted : 0 bytes -- 468int(0) 469bool(false) 470Reading 1000 bytes from file, expecting 0 bytes ... OK 471int(0) 472bool(false) 473 474-- File opened in mode x -- 475-- Reading entire file content, expeceted : 0 bytes -- 476int(0) 477bool(false) 478Reading 1024 bytes from file, expecting 0 bytes ... OK 479int(0) 480bool(false) 481 482-- Reading file content less than max. file size, expeceted : 0 bytes -- 483int(0) 484bool(false) 485Reading 1000 bytes from file, expecting 0 bytes ... OK 486int(0) 487bool(false) 488 489-- File opened in mode xb -- 490-- Reading entire file content, expeceted : 0 bytes -- 491int(0) 492bool(false) 493Reading 1024 bytes from file, expecting 0 bytes ... OK 494int(0) 495bool(false) 496 497-- Reading file content less than max. file size, expeceted : 0 bytes -- 498int(0) 499bool(false) 500Reading 1000 bytes from file, expecting 0 bytes ... OK 501int(0) 502bool(false) 503 504-- File opened in mode xt -- 505-- Reading entire file content, expeceted : 0 bytes -- 506int(0) 507bool(false) 508Reading 1024 bytes from file, expecting 0 bytes ... OK 509int(0) 510bool(false) 511 512-- Reading file content less than max. file size, expeceted : 0 bytes -- 513int(0) 514bool(false) 515Reading 1000 bytes from file, expecting 0 bytes ... OK 516int(0) 517bool(false) 518 519 520-- Testing fread() with file having content of type alphanumeric -- 521-- File opened in mode a -- 522-- Reading entire file content, expeceted : 0 bytes -- 523int(0) 524bool(false) 525Reading 1024 bytes from file, expecting 0 bytes ... OK 526int(0) 527bool(false) 528 529-- Reading file content less than max. file size, expeceted : 0 bytes -- 530int(0) 531bool(false) 532Reading 1000 bytes from file, expecting 0 bytes ... OK 533int(0) 534bool(false) 535 536-- File opened in mode ab -- 537-- Reading entire file content, expeceted : 0 bytes -- 538int(0) 539bool(false) 540Reading 1024 bytes from file, expecting 0 bytes ... OK 541int(0) 542bool(false) 543 544-- Reading file content less than max. file size, expeceted : 0 bytes -- 545int(0) 546bool(false) 547Reading 1000 bytes from file, expecting 0 bytes ... OK 548int(0) 549bool(false) 550 551-- File opened in mode at -- 552-- Reading entire file content, expeceted : 0 bytes -- 553int(0) 554bool(false) 555Reading 1024 bytes from file, expecting 0 bytes ... OK 556int(0) 557bool(false) 558 559-- Reading file content less than max. file size, expeceted : 0 bytes -- 560int(0) 561bool(false) 562Reading 1000 bytes from file, expecting 0 bytes ... OK 563int(0) 564bool(false) 565 566-- File opened in mode w -- 567-- Reading entire file content, expeceted : 0 bytes -- 568int(0) 569bool(false) 570Reading 1024 bytes from file, expecting 0 bytes ... OK 571int(0) 572bool(false) 573 574-- Reading file content less than max. file size, expeceted : 0 bytes -- 575int(0) 576bool(false) 577Reading 1000 bytes from file, expecting 0 bytes ... OK 578int(0) 579bool(false) 580 581-- File opened in mode wb -- 582-- Reading entire file content, expeceted : 0 bytes -- 583int(0) 584bool(false) 585Reading 1024 bytes from file, expecting 0 bytes ... OK 586int(0) 587bool(false) 588 589-- Reading file content less than max. file size, expeceted : 0 bytes -- 590int(0) 591bool(false) 592Reading 1000 bytes from file, expecting 0 bytes ... OK 593int(0) 594bool(false) 595 596-- File opened in mode wt -- 597-- Reading entire file content, expeceted : 0 bytes -- 598int(0) 599bool(false) 600Reading 1024 bytes from file, expecting 0 bytes ... OK 601int(0) 602bool(false) 603 604-- Reading file content less than max. file size, expeceted : 0 bytes -- 605int(0) 606bool(false) 607Reading 1000 bytes from file, expecting 0 bytes ... OK 608int(0) 609bool(false) 610 611-- File opened in mode x -- 612-- Reading entire file content, expeceted : 0 bytes -- 613int(0) 614bool(false) 615Reading 1024 bytes from file, expecting 0 bytes ... OK 616int(0) 617bool(false) 618 619-- Reading file content less than max. file size, expeceted : 0 bytes -- 620int(0) 621bool(false) 622Reading 1000 bytes from file, expecting 0 bytes ... OK 623int(0) 624bool(false) 625 626-- File opened in mode xb -- 627-- Reading entire file content, expeceted : 0 bytes -- 628int(0) 629bool(false) 630Reading 1024 bytes from file, expecting 0 bytes ... OK 631int(0) 632bool(false) 633 634-- Reading file content less than max. file size, expeceted : 0 bytes -- 635int(0) 636bool(false) 637Reading 1000 bytes from file, expecting 0 bytes ... OK 638int(0) 639bool(false) 640 641-- File opened in mode xt -- 642-- Reading entire file content, expeceted : 0 bytes -- 643int(0) 644bool(false) 645Reading 1024 bytes from file, expecting 0 bytes ... OK 646int(0) 647bool(false) 648 649-- Reading file content less than max. file size, expeceted : 0 bytes -- 650int(0) 651bool(false) 652Reading 1000 bytes from file, expecting 0 bytes ... OK 653int(0) 654bool(false) 655 656Done 657
