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web-api
answered Aug 19 '21 00:00
let discuss first what is exec() and system() and passthru() in PHP and how it works ? , so easily get what is differnce between exec() and system() and passthru() in PHP i want to know what is diffrence between exec() and system() and passthru() in PHP ?
1. exec() function
exec() — run command
syntax ::
exec(string $command, array &$output = null, int &$result_code = null): string|false
here
$command parmeter is the string command to run
$output parmeter is hold $output which is array
$result_code is hold result code which is integer
exec() return String or False
2 . system()
system() — can run external program and display the output
syntax ::
system(string $command, int &$result_code = null): string|false
here
$command parmeter is the string command to run
$result_code is hold result code which is integer
system() return String or False
3 . passthru()
passthru() — Execute an external program and display raw output
syntax ::
passthru(string $command, int &$return_var = ?): void
here
$command parmeter is the string command to run
$return_var is for return status of the Unix command present
passthru() return nothing and output from the command passed directly back to the browser or to the terminal without any interference
so first big difference between passthru() vs exec() and system() is that passthru() is pass output from the command passed directly back to the browser or to the terminal without any interference in PHP