Adjusted indentation and code syntax (#34819)

The section titles were in the code examples and it was hard to distinguish the sections from each other.

guide/english/miscellaneous/learn-about-php-loops/index.md

@@ -14,14 +14,14 @@ PHP works with 4 different types of loops:
 
 The `while` loop continues to excecute as long as the specified condition is true.
 
-`php  
+```php
 <?php  
     while(condition is true)  
     {  
         execute code;  
     }  
 ?>  
-
+```
 Example:
 ```php
 <?php  
@@ -33,8 +33,8 @@ execute code;
     } 
 ?>
 ```
-    ```
 Output:
+```php
     x=1 x=2 x=3
 ```
    
@@ -50,7 +50,6 @@ execute code;
 ?>
 ```
 Example:
-
 ```php
 <?php
     $x= 1;
@@ -60,8 +59,8 @@ execute code;
     } while ($x < 5);
 ?>
 ```
-    ```
 Output:
+```php
     x=1 x=2 x=3 x=4
 ```
 
@@ -78,7 +77,6 @@ execute code;
 ?>
 ```
 Example:
-
 ```php
 <?php
     for ($x=1 ; $x <= 4 ; $x++)
@@ -87,8 +85,8 @@ execute code;
     }
 ?>
 ```
-    ```
 Output:
+```php
     x=1 x=2 x=3 x=4
 ```
 
@@ -104,8 +102,7 @@ execute code;
     }
 ?>
 ```
-    Example:
-
+Example
 ```php
 <?php
     $numbers= array("One", "Two", "Three"); 
@@ -115,6 +112,7 @@ execute code;
     }
  ?>
 ```
-    ```
 Output:
+```php
      One Two Three
+```