   #PHP Manual Function Reference pcntl_wtermsig escapeshellarg

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LXXXV. Program Execution functions

Introduction

   Those functions provides means to executes commands on the system
   itself, and means secure such commands.

Requirements

   No external libraries are needed to build this extension.

Installation

   There is no installation needed to use these functions; they are part
   of the PHP core.

Runtime Configuration

   This extension has no configuration directives defined in php.ini.

Resource Types

   This extension has no resource types defined.

Predefined Constants

   This extension has no constants defined.

See Also

   These functions are also closely related to the backtick operator.
   Also, while in safe mode you must consider the safe_mode_exec_dir
   directive.

   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
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