PHP | highlight_file() Function
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.
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.
- 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.
Example 2: Save the given code using name geeks.php.
Use the above filename in the below program to highlight the syntax.