PHP External Command Execution Unveiled exec vs. passthru

That's why we really like PHP's “exec” and “passthru” that we have used quite a bit in the past, to get through to that underlying operating ... php shell_exec() vs exec() With exec(), you can pass an optional param variable which will receive an array of output lines. The shell command you're trying to execute will run with the permissions of the process running the PHP binary ( I.e. apache , etc. All 3 PHP functions: exec(), system() and passthru() executes an external command, but the differences are: exec(): returns the last line of ... The passthru() function is similar to the exec() function in that it executes a command. This function should be used in place of exec() or system() when ... exec() accepts command as input and returns the last line from the result of the command. · passthru() executes a command and passes the raw ... The passthru() function is similar to the exec() function in that it executes a command. This function should be used in place of exec() or system() The exec(), system(), and passthru() functions are all used to execute external programs in PHP. php command exec. If you need to execute a command and have all the data from the command passed directly back without any interference, use the passthru() function. Returns ... The passthru() function runs an external program, specified in the first parameter. It prints everything output by that program to the screen, unlike the exec ...