1--TEST--
2Test fseek(), ftell() & rewind() functions : usage variations - all r and a modes, SEEK_END
3--FILE--
4<?php
5/* Prototype: int fseek ( resource $handle, int $offset [, int $whence] );
6   Description: Seeks on a file pointer
7
8   Prototype: bool rewind ( resource $handle );
9   Description: Rewind the position of a file pointer
10
11   Prototype: int ftell ( resource $handle );
12   Description: Tells file pointer read/write position
13*/
14
15// include the file.inc for common functions for test
16include ("file.inc");
17
18/* Testing fseek(),ftell(),rewind() functions
19     1. All read and append modes
20     2. Testing fseek() with whence = SEEK_END
21*/
22
23echo "*** Testing fseek(), ftell(), rewind() : whence = SEEK_END & all r and a modes ***\n";
24
25$file_modes = array( "r","rb","rt","r+","r+b","r+t",
26                     "a","ab","at","a+","a+b","a+t");
27$file_content_types = array( "text_with_new_line","alphanumeric");
28
29$offset = array(-1,0,1,512,600);// different offsets
30
31$filename = dirname(__FILE__)."/fseek_ftell_rewind_variation7.tmp"; // this is name of the file created by create_files()
32
33/* open the file using $files_modes and perform fseek(),ftell() and rewind() on it */
34foreach($file_content_types as $file_content_type){
35  echo "\n-- File having data of type ". $file_content_type ." --\n";
36  foreach($file_modes as $file_mode) {
37    echo "-- File opened in mode ".$file_mode." --\n";
38    create_files ( dirname(__FILE__), 1, $file_content_type, 0755, 512, "w", "fseek_ftell_rewind_variation"
39                      ,7,"bytes",".tmp"); //create a file with 512 bytes size
40    $file_handle = fopen($filename, $file_mode);
41    if (!$file_handle) {
42      echo "Error: failed to fopen() file: $filename!";
43      exit();
44    }
45    rewind($file_handle);
46    foreach($offset as $count){
47      var_dump( fseek($file_handle,$count,SEEK_END) );
48      var_dump( ftell($file_handle) ); // confirm the file pointer position
49      var_dump( feof($file_handle) ); //ensure that file pointer is not at end
50    } //end of offset loop
51
52    //close the file and check the size, the size will have increased
53    // by 10 bytes because of holes
54    fclose($file_handle);
55    var_dump( filesize($filename) );
56
57    delete_file($filename); // delete file with name
58  } //end of file_mode loop
59} //end of file_content_types loop
60
61echo "Done\n";
62?>
63--EXPECTF--
64*** Testing fseek(), ftell(), rewind() : whence = SEEK_END & all r and a modes ***
65
66-- File having data of type text_with_new_line --
67-- File opened in mode r --
68int(0)
69int(511)
70bool(false)
71int(0)
72int(512)
73bool(false)
74int(0)
75int(513)
76bool(false)
77int(0)
78int(1024)
79bool(false)
80int(0)
81int(1112)
82bool(false)
83int(512)
84-- File opened in mode rb --
85int(0)
86int(511)
87bool(false)
88int(0)
89int(512)
90bool(false)
91int(0)
92int(513)
93bool(false)
94int(0)
95int(1024)
96bool(false)
97int(0)
98int(1112)
99bool(false)
100int(512)
101-- File opened in mode rt --
102int(0)
103int(511)
104bool(false)
105int(0)
106int(512)
107bool(false)
108int(0)
109int(513)
110bool(false)
111int(0)
112int(1024)
113bool(false)
114int(0)
115int(1112)
116bool(false)
117int(512)
118-- File opened in mode r+ --
119int(0)
120int(511)
121bool(false)
122int(0)
123int(512)
124bool(false)
125int(0)
126int(513)
127bool(false)
128int(0)
129int(1024)
130bool(false)
131int(0)
132int(1112)
133bool(false)
134int(512)
135-- File opened in mode r+b --
136int(0)
137int(511)
138bool(false)
139int(0)
140int(512)
141bool(false)
142int(0)
143int(513)
144bool(false)
145int(0)
146int(1024)
147bool(false)
148int(0)
149int(1112)
150bool(false)
151int(512)
152-- File opened in mode r+t --
153int(0)
154int(511)
155bool(false)
156int(0)
157int(512)
158bool(false)
159int(0)
160int(513)
161bool(false)
162int(0)
163int(1024)
164bool(false)
165int(0)
166int(1112)
167bool(false)
168int(512)
169-- File opened in mode a --
170int(0)
171int(511)
172bool(false)
173int(0)
174int(512)
175bool(false)
176int(0)
177int(513)
178bool(false)
179int(0)
180int(1024)
181bool(false)
182int(0)
183int(1112)
184bool(false)
185int(512)
186-- File opened in mode ab --
187int(0)
188int(511)
189bool(false)
190int(0)
191int(512)
192bool(false)
193int(0)
194int(513)
195bool(false)
196int(0)
197int(1024)
198bool(false)
199int(0)
200int(1112)
201bool(false)
202int(512)
203-- File opened in mode at --
204int(0)
205int(511)
206bool(false)
207int(0)
208int(512)
209bool(false)
210int(0)
211int(513)
212bool(false)
213int(0)
214int(1024)
215bool(false)
216int(0)
217int(1112)
218bool(false)
219int(512)
220-- File opened in mode a+ --
221int(0)
222int(511)
223bool(false)
224int(0)
225int(512)
226bool(false)
227int(0)
228int(513)
229bool(false)
230int(0)
231int(1024)
232bool(false)
233int(0)
234int(1112)
235bool(false)
236int(512)
237-- File opened in mode a+b --
238int(0)
239int(511)
240bool(false)
241int(0)
242int(512)
243bool(false)
244int(0)
245int(513)
246bool(false)
247int(0)
248int(1024)
249bool(false)
250int(0)
251int(1112)
252bool(false)
253int(512)
254-- File opened in mode a+t --
255int(0)
256int(511)
257bool(false)
258int(0)
259int(512)
260bool(false)
261int(0)
262int(513)
263bool(false)
264int(0)
265int(1024)
266bool(false)
267int(0)
268int(1112)
269bool(false)
270int(512)
271
272-- File having data of type alphanumeric --
273-- File opened in mode r --
274int(0)
275int(511)
276bool(false)
277int(0)
278int(512)
279bool(false)
280int(0)
281int(513)
282bool(false)
283int(0)
284int(1024)
285bool(false)
286int(0)
287int(1112)
288bool(false)
289int(512)
290-- File opened in mode rb --
291int(0)
292int(511)
293bool(false)
294int(0)
295int(512)
296bool(false)
297int(0)
298int(513)
299bool(false)
300int(0)
301int(1024)
302bool(false)
303int(0)
304int(1112)
305bool(false)
306int(512)
307-- File opened in mode rt --
308int(0)
309int(511)
310bool(false)
311int(0)
312int(512)
313bool(false)
314int(0)
315int(513)
316bool(false)
317int(0)
318int(1024)
319bool(false)
320int(0)
321int(1112)
322bool(false)
323int(512)
324-- File opened in mode r+ --
325int(0)
326int(511)
327bool(false)
328int(0)
329int(512)
330bool(false)
331int(0)
332int(513)
333bool(false)
334int(0)
335int(1024)
336bool(false)
337int(0)
338int(1112)
339bool(false)
340int(512)
341-- File opened in mode r+b --
342int(0)
343int(511)
344bool(false)
345int(0)
346int(512)
347bool(false)
348int(0)
349int(513)
350bool(false)
351int(0)
352int(1024)
353bool(false)
354int(0)
355int(1112)
356bool(false)
357int(512)
358-- File opened in mode r+t --
359int(0)
360int(511)
361bool(false)
362int(0)
363int(512)
364bool(false)
365int(0)
366int(513)
367bool(false)
368int(0)
369int(1024)
370bool(false)
371int(0)
372int(1112)
373bool(false)
374int(512)
375-- File opened in mode a --
376int(0)
377int(511)
378bool(false)
379int(0)
380int(512)
381bool(false)
382int(0)
383int(513)
384bool(false)
385int(0)
386int(1024)
387bool(false)
388int(0)
389int(1112)
390bool(false)
391int(512)
392-- File opened in mode ab --
393int(0)
394int(511)
395bool(false)
396int(0)
397int(512)
398bool(false)
399int(0)
400int(513)
401bool(false)
402int(0)
403int(1024)
404bool(false)
405int(0)
406int(1112)
407bool(false)
408int(512)
409-- File opened in mode at --
410int(0)
411int(511)
412bool(false)
413int(0)
414int(512)
415bool(false)
416int(0)
417int(513)
418bool(false)
419int(0)
420int(1024)
421bool(false)
422int(0)
423int(1112)
424bool(false)
425int(512)
426-- File opened in mode a+ --
427int(0)
428int(511)
429bool(false)
430int(0)
431int(512)
432bool(false)
433int(0)
434int(513)
435bool(false)
436int(0)
437int(1024)
438bool(false)
439int(0)
440int(1112)
441bool(false)
442int(512)
443-- File opened in mode a+b --
444int(0)
445int(511)
446bool(false)
447int(0)
448int(512)
449bool(false)
450int(0)
451int(513)
452bool(false)
453int(0)
454int(1024)
455bool(false)
456int(0)
457int(1112)
458bool(false)
459int(512)
460-- File opened in mode a+t --
461int(0)
462int(511)
463bool(false)
464int(0)
465int(512)
466bool(false)
467int(0)
468int(513)
469bool(false)
470int(0)
471int(1024)
472bool(false)
473int(0)
474int(1112)
475bool(false)
476int(512)
477Done
478