PHP Passthru Return Codes A Hands-on Guide to Understanding and Using Them

All 3 PHP functions: exec(), system() and passthru() executes an external command, but the differences are: exec(): returns the last line of ... ... error occurs or if the command produces no output. The PHP exec() method should be used when access to the program exit code is required. doesn't return anything via any exec/passthru call from php. Separate your system() and passthru() calls into a plain PHP file that just outputs plain text: (obviously make sure that you force some sort of user ... passthru(string $command, int &$result_code = null): ?false . The [, array output [ is returned from the executable file. The file is a verisign file for Payflow Pro, the array output is telling me it ... A code of 0 typically idicates success, while 1 indicates an error. It's important for you to write scripts using this convention so that a ... 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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