1--TEST-- 2Test fseek(), ftell() & rewind() functions : basic functionality - all w and x modes 3--SKIPIF-- 4<?php 5if( substr(PHP_OS, 0, 3) == "WIN" ) 6 die("skip.. Not valid for Windows"); 7?> 8--FILE-- 9<?php 10/* Prototype: int fseek ( resource $handle, int $offset [, int $whence] ); 11 Description: Seeks on a file pointer 12 13 Prototype: bool rewind ( resource $handle ); 14 Description: Rewind the position of a file pointer 15 16 Prototype: int ftell ( resource $handle ); 17 Description: Tells file pointer read/write position 18*/ 19 20// include the file.inc for common functions for test 21include ("file.inc"); 22 23/* Testing fseek(),ftell(),rewind() functions on all write and create with write modes */ 24 25echo "*** Testing fseek(), ftell(), rewind() : basic operations ***\n"; 26$file_modes = array( "w","wb","wt","w+","w+b","w+t", 27 "x","xb","xt","x+","x+b","x+t"); 28 29$file_content_types = array("text_with_new_line","alphanumeric"); 30 31$whence_set = array(SEEK_SET,SEEK_CUR,SEEK_END); 32$whence_string = array("SEEK_SET", "SEEK_CUR", "SEEK_END"); 33 34$filename = dirname(__FILE__)."/fseek_ftell_rewind_basic2.tmp"; // this is name of the file created by create_files() 35 36foreach($file_content_types as $file_content_type){ 37 echo "\n-- File having data of type ". $file_content_type ." --\n"; 38 39 /* open the file using $files_modes and perform fseek(),ftell() and rewind() on it */ 40 foreach($file_modes as $file_mode) { 41 echo "-- File opened in mode ".$file_mode." --\n"; 42 43 $file_handle = fopen($filename, $file_mode); 44 if (!$file_handle) { 45 echo "Error: failed to fopen() file: $filename!"; 46 exit(); 47 } 48 $data_to_be_written=""; 49 fill_buffer($data_to_be_written, $file_content_type, 512); //get the data of size 512 50 $data_to_be_written = $data_to_be_written; 51 fwrite($file_handle,(binary)$data_to_be_written); 52 53 // set file pointer to 0 54 var_dump( rewind($file_handle) ); // set to beginning of file 55 var_dump( ftell($file_handle) ); 56 57 foreach($whence_set as $whence){ 58 echo "-- Testing fseek() with whence = $whence_string[$whence] --\n"; 59 var_dump( fseek($file_handle, 10, $whence) ); //expecting int(0) 60 var_dump( ftell($file_handle) ); // confirm the file pointer position 61 var_dump( feof($file_handle) ); //ensure that file pointer is not at end 62 } //end of whence loop 63 64 //close the file and check the size 65 fclose($file_handle); 66 var_dump( filesize($filename) ); 67 68 delete_file($filename); // delete file with name 69 } //end of file_mode loop 70} //end of File content type loop 71echo "Done\n"; 72?> 73--EXPECTF-- 74*** Testing fseek(), ftell(), rewind() : basic operations *** 75 76-- File having data of type text_with_new_line -- 77-- File opened in mode w -- 78bool(true) 79int(0) 80-- Testing fseek() with whence = SEEK_SET -- 81int(0) 82int(10) 83bool(false) 84-- Testing fseek() with whence = SEEK_CUR -- 85int(0) 86int(20) 87bool(false) 88-- Testing fseek() with whence = SEEK_END -- 89int(0) 90int(522) 91bool(false) 92int(512) 93-- File opened in mode wb -- 94bool(true) 95int(0) 96-- Testing fseek() with whence = SEEK_SET -- 97int(0) 98int(10) 99bool(false) 100-- Testing fseek() with whence = SEEK_CUR -- 101int(0) 102int(20) 103bool(false) 104-- Testing fseek() with whence = SEEK_END -- 105int(0) 106int(522) 107bool(false) 108int(512) 109-- File opened in mode wt -- 110bool(true) 111int(0) 112-- Testing fseek() with whence = SEEK_SET -- 113int(0) 114int(10) 115bool(false) 116-- Testing fseek() with whence = SEEK_CUR -- 117int(0) 118int(20) 119bool(false) 120-- Testing fseek() with whence = SEEK_END -- 121int(0) 122int(522) 123bool(false) 124int(512) 125-- File opened in mode w+ -- 126bool(true) 127int(0) 128-- Testing fseek() with whence = SEEK_SET -- 129int(0) 130int(10) 131bool(false) 132-- Testing fseek() with whence = SEEK_CUR -- 133int(0) 134int(20) 135bool(false) 136-- Testing fseek() with whence = SEEK_END -- 137int(0) 138int(522) 139bool(false) 140int(512) 141-- File opened in mode w+b -- 142bool(true) 143int(0) 144-- Testing fseek() with whence = SEEK_SET -- 145int(0) 146int(10) 147bool(false) 148-- Testing fseek() with whence = SEEK_CUR -- 149int(0) 150int(20) 151bool(false) 152-- Testing fseek() with whence = SEEK_END -- 153int(0) 154int(522) 155bool(false) 156int(512) 157-- File opened in mode w+t -- 158bool(true) 159int(0) 160-- Testing fseek() with whence = SEEK_SET -- 161int(0) 162int(10) 163bool(false) 164-- Testing fseek() with whence = SEEK_CUR -- 165int(0) 166int(20) 167bool(false) 168-- Testing fseek() with whence = SEEK_END -- 169int(0) 170int(522) 171bool(false) 172int(512) 173-- File opened in mode x -- 174bool(true) 175int(0) 176-- Testing fseek() with whence = SEEK_SET -- 177int(0) 178int(10) 179bool(false) 180-- Testing fseek() with whence = SEEK_CUR -- 181int(0) 182int(20) 183bool(false) 184-- Testing fseek() with whence = SEEK_END -- 185int(0) 186int(522) 187bool(false) 188int(512) 189-- File opened in mode xb -- 190bool(true) 191int(0) 192-- Testing fseek() with whence = SEEK_SET -- 193int(0) 194int(10) 195bool(false) 196-- Testing fseek() with whence = SEEK_CUR -- 197int(0) 198int(20) 199bool(false) 200-- Testing fseek() with whence = SEEK_END -- 201int(0) 202int(522) 203bool(false) 204int(512) 205-- File opened in mode xt -- 206bool(true) 207int(0) 208-- Testing fseek() with whence = SEEK_SET -- 209int(0) 210int(10) 211bool(false) 212-- Testing fseek() with whence = SEEK_CUR -- 213int(0) 214int(20) 215bool(false) 216-- Testing fseek() with whence = SEEK_END -- 217int(0) 218int(522) 219bool(false) 220int(512) 221-- File opened in mode x+ -- 222bool(true) 223int(0) 224-- Testing fseek() with whence = SEEK_SET -- 225int(0) 226int(10) 227bool(false) 228-- Testing fseek() with whence = SEEK_CUR -- 229int(0) 230int(20) 231bool(false) 232-- Testing fseek() with whence = SEEK_END -- 233int(0) 234int(522) 235bool(false) 236int(512) 237-- File opened in mode x+b -- 238bool(true) 239int(0) 240-- Testing fseek() with whence = SEEK_SET -- 241int(0) 242int(10) 243bool(false) 244-- Testing fseek() with whence = SEEK_CUR -- 245int(0) 246int(20) 247bool(false) 248-- Testing fseek() with whence = SEEK_END -- 249int(0) 250int(522) 251bool(false) 252int(512) 253-- File opened in mode x+t -- 254bool(true) 255int(0) 256-- Testing fseek() with whence = SEEK_SET -- 257int(0) 258int(10) 259bool(false) 260-- Testing fseek() with whence = SEEK_CUR -- 261int(0) 262int(20) 263bool(false) 264-- Testing fseek() with whence = SEEK_END -- 265int(0) 266int(522) 267bool(false) 268int(512) 269 270-- File having data of type alphanumeric -- 271-- File opened in mode w -- 272bool(true) 273int(0) 274-- Testing fseek() with whence = SEEK_SET -- 275int(0) 276int(10) 277bool(false) 278-- Testing fseek() with whence = SEEK_CUR -- 279int(0) 280int(20) 281bool(false) 282-- Testing fseek() with whence = SEEK_END -- 283int(0) 284int(522) 285bool(false) 286int(512) 287-- File opened in mode wb -- 288bool(true) 289int(0) 290-- Testing fseek() with whence = SEEK_SET -- 291int(0) 292int(10) 293bool(false) 294-- Testing fseek() with whence = SEEK_CUR -- 295int(0) 296int(20) 297bool(false) 298-- Testing fseek() with whence = SEEK_END -- 299int(0) 300int(522) 301bool(false) 302int(512) 303-- File opened in mode wt -- 304bool(true) 305int(0) 306-- Testing fseek() with whence = SEEK_SET -- 307int(0) 308int(10) 309bool(false) 310-- Testing fseek() with whence = SEEK_CUR -- 311int(0) 312int(20) 313bool(false) 314-- Testing fseek() with whence = SEEK_END -- 315int(0) 316int(522) 317bool(false) 318int(512) 319-- File opened in mode w+ -- 320bool(true) 321int(0) 322-- Testing fseek() with whence = SEEK_SET -- 323int(0) 324int(10) 325bool(false) 326-- Testing fseek() with whence = SEEK_CUR -- 327int(0) 328int(20) 329bool(false) 330-- Testing fseek() with whence = SEEK_END -- 331int(0) 332int(522) 333bool(false) 334int(512) 335-- File opened in mode w+b -- 336bool(true) 337int(0) 338-- Testing fseek() with whence = SEEK_SET -- 339int(0) 340int(10) 341bool(false) 342-- Testing fseek() with whence = SEEK_CUR -- 343int(0) 344int(20) 345bool(false) 346-- Testing fseek() with whence = SEEK_END -- 347int(0) 348int(522) 349bool(false) 350int(512) 351-- File opened in mode w+t -- 352bool(true) 353int(0) 354-- Testing fseek() with whence = SEEK_SET -- 355int(0) 356int(10) 357bool(false) 358-- Testing fseek() with whence = SEEK_CUR -- 359int(0) 360int(20) 361bool(false) 362-- Testing fseek() with whence = SEEK_END -- 363int(0) 364int(522) 365bool(false) 366int(512) 367-- File opened in mode x -- 368bool(true) 369int(0) 370-- Testing fseek() with whence = SEEK_SET -- 371int(0) 372int(10) 373bool(false) 374-- Testing fseek() with whence = SEEK_CUR -- 375int(0) 376int(20) 377bool(false) 378-- Testing fseek() with whence = SEEK_END -- 379int(0) 380int(522) 381bool(false) 382int(512) 383-- File opened in mode xb -- 384bool(true) 385int(0) 386-- Testing fseek() with whence = SEEK_SET -- 387int(0) 388int(10) 389bool(false) 390-- Testing fseek() with whence = SEEK_CUR -- 391int(0) 392int(20) 393bool(false) 394-- Testing fseek() with whence = SEEK_END -- 395int(0) 396int(522) 397bool(false) 398int(512) 399-- File opened in mode xt -- 400bool(true) 401int(0) 402-- Testing fseek() with whence = SEEK_SET -- 403int(0) 404int(10) 405bool(false) 406-- Testing fseek() with whence = SEEK_CUR -- 407int(0) 408int(20) 409bool(false) 410-- Testing fseek() with whence = SEEK_END -- 411int(0) 412int(522) 413bool(false) 414int(512) 415-- File opened in mode x+ -- 416bool(true) 417int(0) 418-- Testing fseek() with whence = SEEK_SET -- 419int(0) 420int(10) 421bool(false) 422-- Testing fseek() with whence = SEEK_CUR -- 423int(0) 424int(20) 425bool(false) 426-- Testing fseek() with whence = SEEK_END -- 427int(0) 428int(522) 429bool(false) 430int(512) 431-- File opened in mode x+b -- 432bool(true) 433int(0) 434-- Testing fseek() with whence = SEEK_SET -- 435int(0) 436int(10) 437bool(false) 438-- Testing fseek() with whence = SEEK_CUR -- 439int(0) 440int(20) 441bool(false) 442-- Testing fseek() with whence = SEEK_END -- 443int(0) 444int(522) 445bool(false) 446int(512) 447-- File opened in mode x+t -- 448bool(true) 449int(0) 450-- Testing fseek() with whence = SEEK_SET -- 451int(0) 452int(10) 453bool(false) 454-- Testing fseek() with whence = SEEK_CUR -- 455int(0) 456int(20) 457bool(false) 458-- Testing fseek() with whence = SEEK_END -- 459int(0) 460int(522) 461bool(false) 462int(512) 463Done 464