fix(guide): move guide to english directory

client/src/pages/guide/english/php/php-syntax-and-comments/index.md

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+---
+title: PHP Syntax and Comments
+---
+
+### PHP Syntax
+
+The structure of a PHP syntax somewhat looks like:
+
+```shell
+    <?php
+    
+    // Your PHP code goes here.
+    
+    ?>
+```
+This PHP script can be placed anywhere in the document.
+A PHP file generally have HTML tags, and some scripting code .
+The default file extension for PHP files is `.php`.
+ 
+ ### How to make comments in PHP?
+ 
+A comment in PHP code is a line that is not read/executed as part of the program. Its only purpose is to be read by someone who is looking at the code.
+
+In PHP, comments can be make by two ways either single lined or multi-lined.
+The code snippet given below explains it:
+
+```shell
+<?
+   // This is a single-line comment
+
+    # This is also a single-line comment
+
+   /*
+     This is a multiple-lines comment block
+     that spans over multiple
+     lines
+   */
+?>
+```
+
+### More information
+
+For more resources you can visit: https://www.w3schools.com/php/php_syntax.asp