php man page for escapeshellcmd

Query: escapeshellcmd

OS: php

Section: 3

Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar

ESCAPESHELLCMD(3)							 1							 ESCAPESHELLCMD(3)

escapeshellcmd - Escape shell metacharacters

SYNOPSIS
string escapeshellcmd (string $command)
DESCRIPTION
escapeshellcmd(3) escapes any characters in a string that might be used to trick a shell command into executing arbitrary commands. This function should be used to make sure that any data coming from user input is escaped before this data is passed to the exec(3) or system(3) functions, or to the backtick operator. Following characters are preceded by a backslash: #&;`|*?~<>^()[]{}$, x0A and xFF. ' and " are escaped only if they are not paired. In Windows, all these characters plus % are replaced by a space instead.
PARAMETERS
o $command - The command that will be escaped.
RETURN VALUES
The escaped string.
EXAMPLES
Example #1 escapeshellcmd(3) example <?php // We allow arbitrary number of arguments intentionally here. $command = './configure '.$_POST['configure_options']; $escaped_command = escapeshellcmd($command); system($escaped_command); ?> Warning escapeshellcmd(3) should be used on the whole command string, and it still allows the attacker to pass arbitrary number of argu- ments. For escaping a single argument escapeshellarg(3) should be used instead.
SEE ALSO
escapeshellarg(3), exec(3), popen(3), system(3), backtick operator. PHP Documentation Group ESCAPESHELLCMD(3)
Related Man Pages
addslashes(3) - php
system(3) - php
popen(3) - php
addcslashes(3) - php
css::dom::util(3pm) - debian
Similar Topics in the Unix Linux Community
Escape Characters are driving me crazy!
Awk problem: How to express the backtick(')
Script to delete all something.txt~ file from a directory
Help with convert string
Find Files and then convert them to Uppercase