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Program Execution Functions

Introduction

Those functions provide means to execute commands on the system itself, and means to secure such commands.

Requirements

Tämän laajennuksen asentaminen ei vaadi ylimääräisiä ohjelmakirjastoja.

Installation

Näiden funktioiden käyttö ei vaadi erillisten ohjelmien asentamista; ne toimitetaan PHP:n mukana.

Runtime Configuration

Tämä laajennus ei määrittele yhtäkään direktiiviä php.inissä.

Resource Types

This extension defines a process resource, returned by proc_open().

Predefined Constants

Tämä laajennus ei määrittele yhtäkään uutta vakiota.

Notes

Warning

Open files with lock (especially open sessions) should be closed before executing a program in the background.

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