1--TEST--
2Test fopen and fclose() functions - usage variations - "w" mode
3--FILE--
4<?php
5/*
6 fopen() function:
7 Prototype: resource fopen(string $filename, string $mode
8                            [, bool $use_include_path [, resource $context]] );
9 Description: Opens file or URL.
10*/
11/*
12 fclose() function:
13 Prototype: bool fclose ( resource $handle );
14 Description: Closes an open file pointer
15*/
16
17/* Test fopen() and fclose(): Opening the file in "w" mode,
18   checking for the file creation, write & read operations,
19   checking for the file pointer position,
20   checking for the file truncation when trying to open an existing file in "w" mode,
21   and fclose function
22*/
23$file_path = dirname(__FILE__);
24require($file_path."/file.inc");
25
26create_files($file_path, 1, "text_with_new_line", 0755, 20, "w", "007_variation", 3, "bytes");
27$file = $file_path."/007_variation3.tmp";
28$string = "abcdefghij\nmnopqrst\tuvwxyz\n0123456789";
29
30echo "*** Test fopen() & fclose() functions:  with 'w' mode ***\n";
31$file_handle = fopen($file, "w");  //opening the file "w" mode
32var_dump($file_handle);  //Check for the content of handle
33var_dump( get_resource_type($file_handle) );  //Check for the type of resource
34var_dump( ftell($file_handle) );  //Initial file pointer position, expected at the beginning of the file
35var_dump( fwrite($file_handle, $string) );  //Check for write operation; passes; expected:size of the $string
36var_dump( ftell($file_handle) );  //File pointer position after write operation, expected at the end of the file
37rewind($file_handle);
38var_dump( fread($file_handle, 100) );  //Check for read operation; fails; expected: empty string
39var_dump( ftell($file_handle) );  //File pointer position after read operation, expected at the beginning of the file
40var_dump( fclose($file_handle) );  //Check for close operation on the file handle
41var_dump( get_resource_type($file_handle) );  //Check whether resource is lost after close operation
42
43var_dump( filesize($file) );  //Check for size of existing data file before opening the file in "w" mode again, expected: size of content
44clearstatcache();
45fclose( fopen($file, "w") );  //Opening the existing data file again in "w" mode
46var_dump( filesize($file) );  //Check for size of existing data file after opening the file in "w" mode again, expected: 0 bytes
47clearstatcache();
48
49unlink($file);  //Deleting the file
50fclose( fopen($file, "w") );  //Opening the non-existing file in "w" mode, which will be created
51var_dump( file_exists($file) );  //Check for the existence of file
52echo "*** Done ***\n";
53--CLEAN--
54<?php
55unlink(dirname(__FILE__)."/007_variation3.tmp");
56?>
57--EXPECTF--
58*** Test fopen() & fclose() functions:  with 'w' mode ***
59resource(%d) of type (stream)
60string(6) "stream"
61int(0)
62int(37)
63int(37)
64string(0) ""
65int(0)
66bool(true)
67string(7) "Unknown"
68int(37)
69int(0)
70bool(true)
71*** Done ***
72