From: Operating system: Linux PHP version: Irrelevant Package: Filesystem function related Bug Type: Feature/Change Request Bug description:RFE: can we have `which`
Description: ------------ It would be nice if PHP had a builtin "which" command. For example, which("ffmpeg") would allow the user to check whether ffmpeg was installed, prior to calling it with exec(). Test script: --------------- which("ffmpeg") should return eg: /usr/bin/ffmpeg if the command exists, and is in the £PATH for exec(), or false if it doesn't exist. -- Edit bug report at http://bugs.php.net/bug.php?id=52072&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=52072&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=52072&r=trysnapshot53 Try a snapshot (trunk): http://bugs.php.net/fix.php?id=52072&r=trysnapshottrunk Fixed in SVN: http://bugs.php.net/fix.php?id=52072&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=52072&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=52072&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=52072&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=52072&r=needscript Try newer version: http://bugs.php.net/fix.php?id=52072&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=52072&r=support Expected behavior: http://bugs.php.net/fix.php?id=52072&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=52072&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=52072&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=52072&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=52072&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=52072&r=dst IIS Stability: http://bugs.php.net/fix.php?id=52072&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=52072&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=52072&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=52072&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=52072&r=mysqlcfg