Function array_insert
Inserts a value in a array before, or after, a given key.
Numeric keys are not preserved.
Parameters summary
 | 
		$array | 
		|
 | 
		$relative | 
		|
 | 
		$value | 
		|
 | 
		$key = null | 
		|
 | 
		$after = false | 
		
Return value summary
			array
		 | 
		array |