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Annotation of embedaddon/php/ext/standard/tests/file/symlink_link_linkinfo_is_link_variation4.phpt, revision 1.1.1.1

1.1       misho       1: --TEST--
                      2: Test symlink(), linkinfo(), link() and is_link() functions : usage variations - access/update file through hard link
                      3: --SKIPIF--
                      4: <?php
                      5: if (substr(PHP_OS, 0, 3) == 'WIN') {
                      6:     die('skip no symlinks on Windows');
                      7: }
                      8: ?>
                      9: --FILE--
                     10: <?php
                     11: /* Prototype: bool symlink ( string $target, string $link );
                     12:    Description: creates a symbolic link to the existing target with the specified name link
                     13: 
                     14:    Prototype: bool is_link ( string $filename );
                     15:    Description: Tells whether the given file is a symbolic link.
                     16: 
                     17:    Prototype: bool link ( string $target, string $link );
                     18:    Description: Create a hard link
                     19: 
                     20:    Prototype: int linkinfo ( string $path );
                     21:    Description: Gets information about a link
                     22: */
                     23: 
                     24: /* Variation 4 : Create file and a hard link to the file
                     25:                  Access data of the file through the hard link 
                     26:                  Update the file through hard link
                     27:                  Check size of file and hard link
                     28: */
                     29: $file_path = dirname(__FILE__);
                     30: 
                     31: echo "*** Accessing and updating data of file through hard link ***\n";
                     32: // Creating file and inserting data into it
                     33: $filename = "$file_path/symlink__link_linkinfo_is_link_variation4.tmp";
                     34: // create temp file
                     35: $file = fopen($filename, "w");
                     36: // fill data into file
                     37: fwrite($file, str_repeat("text", 20) );
                     38: fclose($file);
                     39: 
                     40: echo "\n-- Access data of the file through the hard link --\n";
                     41: // create hard link to file
                     42: $linkname = "$file_path/symlink_link_linkinfo_is_link_link_variation4.tmp";
                     43: var_dump( link($filename, $linkname) );
                     44: $data_from_link = file_get_contents($linkname);  // data read from $filename
                     45: var_dump( $data_from_link );
                     46: 
                     47: echo "\n-- Check size of hard link and file --\n";
                     48: if( filesize($filename) == filesize($linkname) ) 
                     49:   echo "\nSize of file and hard link are same\n";
                     50: else
                     51:   echo "\nWarning: Size of file and hard link differ\n";
                     52: 
                     53: echo "\n-- Updating file with data through hard link --\n";
                     54: // append link with data
                     55: $fp = fopen($linkname, "a");  // open in append mode
                     56: fwrite($fp, "Hello World");
                     57: fclose($fp);
                     58: 
                     59: // now check temp file for data; it should append "Hello World"
                     60: $data_from_file = file_get_contents($filename);
                     61: var_dump( $data_from_file );
                     62: 
                     63: echo "\n-- Check size of hard link and file --\n";
                     64: if( filesize($filename) == filesize($linkname) ) 
                     65:   echo "\nSize of file and hard link are same\n";
                     66: else
                     67:   echo "\nWarning: Size of file and hard link differ\n";
                     68: 
                     69: echo "\n-- Updating file with data and check data through hard link --\n";
                     70: // write to temp file
                     71: $file = fopen($filename, "w");
                     72: fwrite($file, "Hello World");
                     73: fclose($file);
                     74: 
                     75: // now check link for data; it should echo "Hello World"
                     76: $data_from_link = file_get_contents($linkname);
                     77: var_dump( $data_from_link );
                     78: 
                     79: echo "\n-- Check size of hard link and file --\n";
                     80: var_dump( filesize($filename) );
                     81: var_dump( filesize($linkname) );
                     82: if( filesize($filename) == filesize($linkname) ) 
                     83:   echo "\nSize of file and hard link are same\n";
                     84: else
                     85:   echo "\nWarning: Size of file and hard link differ\n";
                     86: 
                     87: // delete the link
                     88: unlink($linkname);
                     89: // delete the temporary file
                     90: unlink($filename);
                     91: 
                     92: echo "Done\n";
                     93: ?>
                     94: --EXPECTF--
                     95: *** Accessing and updating data of file through hard link ***
                     96: 
                     97: -- Access data of the file through the hard link --
                     98: bool(true)
                     99: string(80) "texttexttexttexttexttexttexttexttexttexttexttexttexttexttexttexttexttexttexttext"
                    100: 
                    101: -- Check size of hard link and file --
                    102: 
                    103: Size of file and hard link are same
                    104: 
                    105: -- Updating file with data through hard link --
                    106: string(91) "texttexttexttexttexttexttexttexttexttexttexttexttexttexttexttexttexttexttexttextHello World"
                    107: 
                    108: -- Check size of hard link and file --
                    109: 
                    110: Size of file and hard link are same
                    111: 
                    112: -- Updating file with data and check data through hard link --
                    113: string(11) "Hello World"
                    114: 
                    115: -- Check size of hard link and file --
                    116: int(11)
                    117: int(11)
                    118: 
                    119: Size of file and hard link are same
                    120: Done