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PHP highlight_string() Function

< PHP Misc Reference

Example

Output a string with the PHP syntax highlighted:

<html>
<body>
<?php
highlight_string("Hello world! <?php phpinfo(); ?>");
?>
</body>
</html>

The browser output of the code above will be:

Hello world! <?php phpinfo(); ?>

The HTML output of the code above will be (View Source):

<html>
<body>
<code>
<span style="color: #000000">Hello&nbsp;world!&nbsp;
<span style="color: #0000BB">&lt;?php&nbsp;phpinfo</span>
<span style="color: #007700">();&nbsp;</span>
<span style="color: #0000BB">?&gt;</span>
</span>
</code>
</body>
</html>
Run example »

Definition and Usage

The highlight_string() function outputs a string with the PHP syntax highlighted. The string is highlighted by using HTML tags.

The colors used for highlighting can be set in the php.ini file or with the ini_set() function.


Syntax

highlight_string(string,return)

Parameter Description
string Required. Specifies the string to highlight
return Optional. If this parameter is set to TRUE, this function will return the highlighted code as a string, instead of printing it out. Default is FALSE

Technical Details

Return Value: Returns TRUE on success, or FALSE on failure
PHP Version: 4+
Changelog: The return parameter was added in PHP 4.2.0

< PHP Misc Reference