The highlight_file() function is an inbuilt function in PHP which is used to highlight the syntax of file. The syntax is highlighted by using HTML tags. Syntax:
highlight_file( $filename, $return )
Parameters: This function accepts two parameters as mentioned above and described below:
- $filename: It is required parameter. It specifies the file whose content to be displayed.
- $return: It is optional and boolean parameter. Its default value is FALSE. If it is set to TRUE, instead of printing it out, this function will return the highlighted code as a string.
Return Value: It returns TRUE on success, or returns FALSE on failure. If $return is set to TRUE, it will return the highlighted code as a string. Note:
- This function is available on PHP 4.0.0 and newer version.
- The colors used for highlighting the PHP syntax can be set with the ini_set() function or in the php.ini file.
- With this function entire file will be displayed, that may include sensitive data like passwords etc.
Example 1: Save the given code using name server.php and run the program.
php
<!DOCTYPE html><html><body> <?php
highlight_file("geeks.php");
?>
</body></html> |
Output:
php
<?php// Loading XML document to $user$user = <<<XML
<user> <username>Username</username>
<name>Firstname Lastname</name>
<phone>+91-9876543210</phone>
<detail font-color="blue" font="awesome-fonts"
font-size="24px">
Noida, India
</detail>
</user>XML;// Loading the string as simple xml object$xml = simplexml_load_string($user);
// Print the childrenforeach($xml->children() as $child) {
echo "child node:".$child."</br>";
}?> |
Use the above filename in the below program to highlight the syntax.
php
<!DOCTYPE html><html><body> <?php
highlight_file("geeks.php");
?>
</body></html> |
Output: