<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title>Introduction</title> </head> <body><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="book.exec.html">Program execution</a></div> <div class="next" style="text-align: right; float: right;"><a href="exec.setup.html">Installing/Configuring</a></div> <div class="up"><a href="book.exec.html">Program execution</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div><hr /><div id="intro.exec" class="preface"> <h1 class="title">Introduction</h1> <p class="para"> Those functions provide means to execute commands on the system itself, and means to secure such commands. </p> <blockquote class="note"><p><strong class="note">Note</strong>: <p class="para"> All execution functions call the commands through <em>cmd.exe</em> under Windows. Therefore the user calling these functions needs appropriate privilege to run this command. The only exception is <span class="function"><a href="function.proc-open.html" class="function">proc_open()</a></span> with <em>bypass_shell</em> option. </p> </p></blockquote> </div><hr /><div class="manualnavbar" style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="book.exec.html">Program execution</a></div> <div class="next" style="text-align: right; float: right;"><a href="exec.setup.html">Installing/Configuring</a></div> <div class="up"><a href="book.exec.html">Program execution</a></div> <div class="home"><a href="index.html">PHP Manual</a></div> </div></body></html>