PHP Passthru Return Codes A Practical Handbook for Developers

passthru — Execute an external program and display raw output; proc_close — Close a process opened by proc_open and return the exit code of that process ... You can use exec('whoami') to find out what user your script is running as. Also, try trapping the return code from the exec command. Pass a ... ... PHP exec() Enable (PHP exec() Enable) Error Message ... Our abuse scanners are designed to recognize PHP code. If you can ... I am trying to execute system command, but am getting a return value of 255. (i guess from bash) Here is my php script: '; passthru('lame ... exec($command,$output,$return_var);. in the server If I use the command line it works fine, but when I execute in the php class I get a 139 (segmentation fault). The exec() function runs an external program, specified in the first parameter. It sends back the last line outputted from that program as its return value. It looks like the signature is not quite correct: passthru() returns null (what should be treated like void by the programmer) on success, ... Similarly, if you pass a second parameter to passthru() it will be filled with the return value of the command. For example:

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