Table of Contents
escapeshellarg -- Escape a string to be used as a shell argument
escapeshellcmd -- Escape shell metacharacters
exec -- Execute an external program
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.
proc_get_status -- Get information about a process opened by proc_open()
proc_nice -- Change the priority of the current process
proc_open -- Execute a command and open file pointers for input/output
proc_terminate -- kills a process opened by proc_open
shell_exec -- Execute command via shell and return the complete output as a string
system -- Execute an external program and display the output

Php ref.exec Function syntax tag

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Php ref.exec syntax tutorial

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