The show_source() function is an inbuilt function in PHP which is used to return a file with the PHP syntax highlighted. The syntax is highlighted by using HTML tags.
Syntax:
show_source( $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 display.
- $return: It is optional 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: If it is set to TRUE then it returns the highlighted code as string. It will return TRUE on success or return FALSE on failure.
Note:
- This function is available for PHP 4.0.0 and newer version.
- The color 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.
Below programs illustrate the show_source() function in PHP:
Program 1: Below program save the file using file name show_source.php
<html> <body> <?php show_source("show_source.php"); ?> </body> </html> |
Output:
Program 2: Below program save the file using file name source_code.php
<?php // Loading XML document to $user $user = <<<XML <user> <username>Geeks123</username> <name>neveropen</name> <phone>+91-XXXXXXXXXX</phone> <detail font-color="blue" font-size="24px"> Noida, India </detail> </user> XML; // Loading string as simple xml object $xml = simplexml_load_string($user); // Printing children element foreach($xml->children() as $child) { echo "child node:" . $child . "</br>"; } ?> |
main.php
<!DOCTYPE html> <html> <body> <?php show_source("source_code.php"); ?> </body> </html> |
Output:
Reference: https://www.php.net/manual/en/function.show-source.php
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