SHELL_EXEC(3) 1 SHELL_EXEC(3)
shell_exec - Execute command via shell and return the complete output as a string
SYNOPSIS
string shell_exec (string $cmd)
DESCRIPTION
This function is identical to the backtick operator.
PARAMETERS
o $cmd
- The command that will be executed.
RETURN VALUES
The output from the executed command or NULL if an error occurred or the command produces no output.
Note
This function can return NULL both when an error occurs or the program produces no output. It is not possible to detect execution
failures using this function. exec(3) should be used when access to the program exit code is required.
EXAMPLES
Example #1
A shell_exec(3) example
<?php
$output = shell_exec('ls -lart');
echo "<pre>$output</pre>";
?>
NOTES
Note
This function is disabled when PHP is running in safe mode.
SEE ALSO
exec(3), escapeshellcmd(3).
PHP Documentation Group SHELL_EXEC(3)
