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PHP highlight_file() Function

PHP Misc Reference Complete PHP Misc Reference

Definition and Usage

The highlight_file() function outputs a file with the PHP syntax highlighted. The syntax 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.

This function returns TRUE on success, or FALSE on failure.

Syntax

highlight_file(filename,return)

Parameter Description
filename Required. Specifies the file to display
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

Tips and Notes

Note: When using this function, the entire file will be displayed - including passwords and any other sensitive information!

Example

"test.php":

<html>
<body>
<?php
highlight_file("test.php");
?>
</body>
</html>

The output of the code above could be:

<html>
<body>
<?php
highlight_file("test.php");
?>
</body>
</html>

and, if you select "View source" in the browser window, it will look something like this:

<html>
<body>
<code>
<span style="color: #000000">&lt;html&gt;
<br />
&lt;body&gt;
<br />
<span style="color: #0000BB">&lt;?php
<br />highlight_file</span>
<span style="color: #007700">(</span>
<span style="color: #DD0000">"test.php"</span>
<span style="color: #007700">);<br /></span>
<span style="color: #0000BB">?&gt;<br /></span>
&lt;/body&gt;
<br />
&lt;/html&gt;</span>
</code>
</body>
</html>

PHP Misc Reference Complete PHP Misc Reference
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