THE WORLD'S LARGEST WEB DEVELOPER SITE

PHP Tutorial

PHP HOME PHP Intro PHP Install PHP Syntax PHP Comments PHP Variables PHP Echo / Print PHP Data Types PHP Strings PHP Numbers PHP Constants PHP Operators PHP If...Else...Elseif PHP Switch PHP Loops PHP Functions PHP Arrays PHP Superglobals

PHP Forms

PHP Form Handling PHP Form Validation PHP Form Required PHP Form URL/E-mail PHP Form Complete

PHP Advanced

PHP Date and Time PHP Include PHP File Handling PHP File Open/Read PHP File Create/Write PHP File Upload PHP Cookies PHP Sessions PHP Filters PHP Filters Advanced PHP JSON

PHP OOP

PHP What is OOP PHP Classes/Objects PHP Constructor PHP Destructor PHP Access Modifiers PHP Inheritance PHP Constants PHP Abstract Classes PHP Traits PHP Static Methods PHP Static Properties

MySQL Database

MySQL Database MySQL Connect MySQL Create DB MySQL Create Table MySQL Insert Data MySQL Get Last ID MySQL Insert Multiple MySQL Prepared MySQL Select Data MySQL Where MySQL Order By MySQL Delete Data MySQL Update Data MySQL Limit Data

PHP XML

PHP XML Parsers PHP SimpleXML Parser PHP SimpleXML - Get PHP XML Expat PHP XML DOM

PHP - AJAX

AJAX Intro AJAX PHP AJAX Database AJAX XML AJAX Live Search AJAX Poll

PHP Examples

PHP Examples PHP Quiz PHP Exercises PHP Certificate

PHP Reference

PHP Overview PHP Array PHP Calendar PHP Date PHP Directory PHP Error PHP Filesystem PHP Filter PHP FTP PHP JSON PHP Libxml PHP Mail PHP Math PHP Misc PHP MySQLi PHP Network PHP SimpleXML PHP Stream PHP String PHP Variable Handling PHP XML Parser PHP Zip PHP Timezones

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>
Try it Yourself »

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 syntax highlighting can be set in the php.ini file or with the ini_set() function.


Syntax

highlight_string(string,return)

Parameter Values

Parameter Description
string Required. Specifies the string to be highlighted
return Optional. If 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