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--TEST-- Test symlink(), linkinfo(), link() and is_link() functions : usage variations - link & lstat[dev] value --SKIPIF-- <?php if (substr(PHP_OS, 0, 3) == 'WIN') { die('skip no symlinks on Windows'); } ?> --FILE-- <?php /* Prototype: bool symlink ( string $target, string $link ); Description: creates a symbolic link to the existing target with the specified name link Prototype: bool is_link ( string $filename ); Description: Tells whether the given file is a symbolic link. Prototype: bool link ( string $target, string $link ); Description: Create a hard link Prototype: int linkinfo ( string $path ); Description: Gets information about a link */ /* Variation 9 : Check lstat of soft/hard link created Check linkinfo() value with lstat['dev'] */ // temp file used $file_path = dirname(__FILE__); $dirname = $file_path."/symlink_link_linkinfo_is_link_variation9"; mkdir($dirname); $filename = "$dirname/symlink_link_linkinfo_is_link_variation9.tmp"; // soft link name used $soft_link = "$dirname/symlink_link_linkinfo_is_link_softlink_variation9.tmp"; // hard link name used $hard_link = "$dirname/symlink_link_linkinfo_is_link_hardlink_variation9.tmp"; // create the file $fp = fopen($filename, "w"); fclose($fp); echo "*** Checking lstat() on soft link ***\n"; // create soft link var_dump( symlink($filename, $soft_link) ); // confirming that linkinfo() = lstat['dev'] , this should always match $linkinfo = linkinfo($soft_link); $s1 = lstat($soft_link); echo "linkinfo() returns : $linkinfo\n"; echo "lstat() returns lstat['dev'] as $s1[0]\n"; if( $s1[0] == $linkinfo ) echo "\nlinkinfo() value matches lstat['dev']\n"; else echo "\nWarning: linkinfo() value doesnt match lstat['dev']\n"; // delete link unlink($soft_link); echo "\n*** Checking lstat() on hard link ***\n"; // create hard link var_dump( link($filename, $hard_link) ); // confirming that linkinfo() = lstat['dev'] , this should always match $linkinfo = linkinfo($hard_link); $s1 = lstat($hard_link); echo "linkinfo() returns : $linkinfo\n"; echo "lstat() returns lstat['dev'] as $s1[0]\n"; if( $s1[0] == $linkinfo ) echo "\nlinkinfo() value matches lstat['dev']\n"; else echo "\nWarning: linkinfo() value doesnt match lstat['dev']\n"; // delete link unlink($hard_link); echo "\n*** Checking lstat() on a soft link to directory ***\n"; // create soft link var_dump( symlink($dirname, $soft_link) ); // confirming that linkinfo() = lstat['dev'], this should always match $linkinfo = linkinfo($soft_link); $s1 = lstat($soft_link); echo "linkinfo() returns : $linkinfo\n"; echo "lstat() returns lstat['dev'] as $s1[0]\n"; if( $s1[0] == $linkinfo ) echo "\nlinkinfo() value matches lstat['dev']\n"; else echo "\nWarning: linkinfo() value doesnt match lstat['dev']\n"; // delete link unlink($soft_link); echo "Done\n"; ?> --CLEAN-- <?php $file_path = dirname(__FILE__); $dirname = $file_path."/symlink_link_linkinfo_is_link_variation9"; $filename = "$dirname/symlink_link_linkinfo_is_link_variation9.tmp"; unlink($filename); rmdir($dirname); ?> --EXPECTF-- *** Checking lstat() on soft link *** bool(true) linkinfo() returns : %d lstat() returns lstat['dev'] as %d linkinfo() value matches lstat['dev'] *** Checking lstat() on hard link *** bool(true) linkinfo() returns : %d lstat() returns lstat['dev'] as %d linkinfo() value matches lstat['dev'] *** Checking lstat() on a soft link to directory *** bool(true) linkinfo() returns : %d lstat() returns lstat['dev'] as %d linkinfo() value matches lstat['dev'] Done