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

@@ -14,107 +14,105 @@ 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;  
-}  
+    while(condition is true)  
+    {  
+        execute code;  
+    }  
 ?>  
+```
+Example:
+```php
+<?php  
+    $x = 1;
+    while($x <= 3) 
+    { 
+        echo "x=$x ";
+        $x++;
+    } 
+?>
+```
+Output:
+```php
+    x=1 x=2 x=3
+```
+   
+## Do...while loop
 
-    Example:
-    ```php
-    <?php  
-      $x = 1;
-       while($x <= 3) 
-       { 
-         echo "x=$x ";
-         $x++;
-       } 
-    ?>
-    ```
-    ```
-    Output: 
-     x=1 x=2 x=3
-    ```
+In the `do...while` loop the block of code is executed before the condition is checked.
 
-    ## Do...while loop
-
-    In the `do...while` loop the block of code is executed before the condition is checked.
-
-      ```php
-    <?php
-         do {
-           execute code;
-         } while (condition);
-    ?>
-    ```
-    Example:
-
-      ```php
-    <?php
+```php
+<?php
+    do {
+        execute code;
+    } while (condition);
+?>
+```
+Example:
+```php
+<?php
     $x= 1;
-         do {
-           echo "x=$x ";
-           $x++;
-         } while ($x < 5);
-    ?>
-    ```
-    ```
-    Output: 
-     x=1 x=2 x=3 x=4
-    ```
+    do {
+        echo "x=$x ";
+        $x++;
+    } while ($x < 5);
+?>
+```
+Output:
+```php
+    x=1 x=2 x=3 x=4
+```
 
-    ## For loop
+## For loop
 
-    The `for` loop is used when the number of times the block is to be executed is known in advance.
+The `for` loop is used when the number of times the block is to be executed is known in advance.
 
-      ```php
-    <?php
-         for (variable initialisation; test condition; increment)
-         { 
-           execute code; 
-         }
-    ?>
-    ```
-    Example:
+```php
+<?php
+    for (variable initialisation; test condition; increment)
+    { 
+        execute code; 
+    }
+?>
+```
+Example:
+```php
+<?php
+    for ($x=1 ; $x <= 4 ; $x++)
+    {
+        echo "x= $x "; 
+    }
+?>
+```
+Output:
+```php
+    x=1 x=2 x=3 x=4
+```
 
-      ```php
-    <?php
-        for ($x=1 ; $x <= 4 ; $x++)
-        {
-          echo "x= $x "; 
-        }
-    ?>
-    ```
-    ```
-    Output:
-     x=1 x=2 x=3 x=4
-    ```
+## Foreach loop
 
-    ## Foreach loop
+The `foreach` loop helps in traversing through arrays. 
 
-    The `foreach` loop helps in traversing through arrays. 
-
-      ```php
-    <?php
-        foreach ($array as $value)
-        { 
-          executable code; 
-        }
-    ?>
-    ```
-    Example:
-
-      ```php
-    <?php
-     $numbers= array("One", "Two", "Three"); 
-       foreach ($numbers as $value)
-       {
-         echo "$value ";
-       }
-    ?>
-    ```
-    ```
-    Output:
-     One Two Three
+```php
+<?php
+    foreach ($array as $value)
+    { 
+        executable code; 
+    }
+?>
+```
+Example
+```php
+<?php
+    $numbers= array("One", "Two", "Three"); 
+    foreach ($numbers as $value)
+    {
+        echo "$value ";
+    }
+ ?>
+```
+Output:
+```php
+     One Two Three
+```