1--TEST--
2Test fseek(), ftell() & rewind() functions : usage variations - all r and a modes, SEEK_SET
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 $handle );
12   Description: Tells file pointer read/write position
13*/
14
15// include the file.inc for common functions for test
16include ("file.inc");
17
18/* Testing fseek(),ftell(),rewind() functions
19     1. All read and append modes
20     2. Testing fseek() with whence = SEEK_SET
21*/
22
23echo "*** Testing fseek(), ftell(), rewind() : whence = SEEK_SET & all r and a modes ***\n";
24
25$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_variation3.tmp"; // this is name of the file created by create_files()
32
33  /* open the file using $files_modes and perform fseek(),ftell() and rewind() on it */
34echo "*** Testing fseek() with whence = SEEK_SET ***\n";
35foreach($file_content_types as $file_content_type){
36  echo "\n-- File having data of type ". $file_content_type ." --\n";
37
38  foreach($file_modes as $file_mode) {
39    echo "-- File opened in mode ".$file_mode." --\n";
40    create_files ( dirname(__FILE__), 1, $file_content_type, 0755, 512, "w", "fseek_ftell_rewind_variation",
41                      3, "bytes", ".tmp"); //create a file with 512 bytes size
42    $file_handle = fopen($filename, $file_mode);
43    if (!$file_handle) {
44      echo "Error: failed to fopen() file: $filename!";
45      exit();
46    }
47    foreach($offset as $count){
48      var_dump( fseek($file_handle,$count,SEEK_SET) );
49      var_dump( ftell($file_handle) ); // confirm the file pointer position
50      var_dump( feof($file_handle) ); //ensure that file pointer is not at end
51    } //end of offset loop
52
53    //close the file and check the size
54    fclose($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_SET & all r and a modes ***
65*** Testing fseek() with whence = SEEK_SET ***
66
67-- File having data of type text_with_new_line --
68-- File opened in mode r --
69int(-1)
70int(0)
71bool(false)
72int(0)
73int(0)
74bool(false)
75int(0)
76int(1)
77bool(false)
78int(0)
79int(512)
80bool(false)
81int(0)
82int(600)
83bool(false)
84int(512)
85-- File opened in mode rb --
86int(-1)
87int(0)
88bool(false)
89int(0)
90int(0)
91bool(false)
92int(0)
93int(1)
94bool(false)
95int(0)
96int(512)
97bool(false)
98int(0)
99int(600)
100bool(false)
101int(512)
102-- File opened in mode rt --
103int(-1)
104int(0)
105bool(false)
106int(0)
107int(0)
108bool(false)
109int(0)
110int(1)
111bool(false)
112int(0)
113int(512)
114bool(false)
115int(0)
116int(600)
117bool(false)
118int(512)
119-- File opened in mode r+ --
120int(-1)
121int(0)
122bool(false)
123int(0)
124int(0)
125bool(false)
126int(0)
127int(1)
128bool(false)
129int(0)
130int(512)
131bool(false)
132int(0)
133int(600)
134bool(false)
135int(512)
136-- File opened in mode r+b --
137int(-1)
138int(0)
139bool(false)
140int(0)
141int(0)
142bool(false)
143int(0)
144int(1)
145bool(false)
146int(0)
147int(512)
148bool(false)
149int(0)
150int(600)
151bool(false)
152int(512)
153-- File opened in mode r+t --
154int(-1)
155int(0)
156bool(false)
157int(0)
158int(0)
159bool(false)
160int(0)
161int(1)
162bool(false)
163int(0)
164int(512)
165bool(false)
166int(0)
167int(600)
168bool(false)
169int(512)
170-- File opened in mode a --
171int(-1)
172int(0)
173bool(false)
174int(0)
175int(0)
176bool(false)
177int(0)
178int(1)
179bool(false)
180int(0)
181int(512)
182bool(false)
183int(0)
184int(600)
185bool(false)
186int(512)
187-- File opened in mode ab --
188int(-1)
189int(0)
190bool(false)
191int(0)
192int(0)
193bool(false)
194int(0)
195int(1)
196bool(false)
197int(0)
198int(512)
199bool(false)
200int(0)
201int(600)
202bool(false)
203int(512)
204-- File opened in mode at --
205int(-1)
206int(0)
207bool(false)
208int(0)
209int(0)
210bool(false)
211int(0)
212int(1)
213bool(false)
214int(0)
215int(512)
216bool(false)
217int(0)
218int(600)
219bool(false)
220int(512)
221-- File opened in mode a+ --
222int(-1)
223int(0)
224bool(false)
225int(0)
226int(0)
227bool(false)
228int(0)
229int(1)
230bool(false)
231int(0)
232int(512)
233bool(false)
234int(0)
235int(600)
236bool(false)
237int(512)
238-- File opened in mode a+b --
239int(-1)
240int(0)
241bool(false)
242int(0)
243int(0)
244bool(false)
245int(0)
246int(1)
247bool(false)
248int(0)
249int(512)
250bool(false)
251int(0)
252int(600)
253bool(false)
254int(512)
255-- File opened in mode a+t --
256int(-1)
257int(0)
258bool(false)
259int(0)
260int(0)
261bool(false)
262int(0)
263int(1)
264bool(false)
265int(0)
266int(512)
267bool(false)
268int(0)
269int(600)
270bool(false)
271int(512)
272
273-- File having data of type alphanumeric --
274-- File opened in mode r --
275int(-1)
276int(0)
277bool(false)
278int(0)
279int(0)
280bool(false)
281int(0)
282int(1)
283bool(false)
284int(0)
285int(512)
286bool(false)
287int(0)
288int(600)
289bool(false)
290int(512)
291-- File opened in mode rb --
292int(-1)
293int(0)
294bool(false)
295int(0)
296int(0)
297bool(false)
298int(0)
299int(1)
300bool(false)
301int(0)
302int(512)
303bool(false)
304int(0)
305int(600)
306bool(false)
307int(512)
308-- File opened in mode rt --
309int(-1)
310int(0)
311bool(false)
312int(0)
313int(0)
314bool(false)
315int(0)
316int(1)
317bool(false)
318int(0)
319int(512)
320bool(false)
321int(0)
322int(600)
323bool(false)
324int(512)
325-- File opened in mode r+ --
326int(-1)
327int(0)
328bool(false)
329int(0)
330int(0)
331bool(false)
332int(0)
333int(1)
334bool(false)
335int(0)
336int(512)
337bool(false)
338int(0)
339int(600)
340bool(false)
341int(512)
342-- File opened in mode r+b --
343int(-1)
344int(0)
345bool(false)
346int(0)
347int(0)
348bool(false)
349int(0)
350int(1)
351bool(false)
352int(0)
353int(512)
354bool(false)
355int(0)
356int(600)
357bool(false)
358int(512)
359-- File opened in mode r+t --
360int(-1)
361int(0)
362bool(false)
363int(0)
364int(0)
365bool(false)
366int(0)
367int(1)
368bool(false)
369int(0)
370int(512)
371bool(false)
372int(0)
373int(600)
374bool(false)
375int(512)
376-- File opened in mode a --
377int(-1)
378int(0)
379bool(false)
380int(0)
381int(0)
382bool(false)
383int(0)
384int(1)
385bool(false)
386int(0)
387int(512)
388bool(false)
389int(0)
390int(600)
391bool(false)
392int(512)
393-- File opened in mode ab --
394int(-1)
395int(0)
396bool(false)
397int(0)
398int(0)
399bool(false)
400int(0)
401int(1)
402bool(false)
403int(0)
404int(512)
405bool(false)
406int(0)
407int(600)
408bool(false)
409int(512)
410-- File opened in mode at --
411int(-1)
412int(0)
413bool(false)
414int(0)
415int(0)
416bool(false)
417int(0)
418int(1)
419bool(false)
420int(0)
421int(512)
422bool(false)
423int(0)
424int(600)
425bool(false)
426int(512)
427-- File opened in mode a+ --
428int(-1)
429int(0)
430bool(false)
431int(0)
432int(0)
433bool(false)
434int(0)
435int(1)
436bool(false)
437int(0)
438int(512)
439bool(false)
440int(0)
441int(600)
442bool(false)
443int(512)
444-- File opened in mode a+b --
445int(-1)
446int(0)
447bool(false)
448int(0)
449int(0)
450bool(false)
451int(0)
452int(1)
453bool(false)
454int(0)
455int(512)
456bool(false)
457int(0)
458int(600)
459bool(false)
460int(512)
461-- File opened in mode a+t --
462int(-1)
463int(0)
464bool(false)
465int(0)
466int(0)
467bool(false)
468int(0)
469int(1)
470bool(false)
471int(0)
472int(512)
473bool(false)
474int(0)
475int(600)
476bool(false)
477int(512)
478Done
479