Multidimensional array search using php | Learning Curve- Perfect Tutorial for the beginers

<?php
$users=array(

 array( 'username'=>'vasanthan',
         'nickname'=>'rajendran',
),

 array( 'username'=>'sudhina',
         'nickname'=>'vivaan',
)
);



foreach($users as $key=>$val)

{
$search_value="vasanthan";
$output_display='';
 
 
 if (in_array($search_value, $val,TRUE)) {
    $output_display=$search_value;
    break;
  }


 
}
echo $output_display;

?>

<?php

$users=array(

array( 'username'=>'vasanthan',

'nickname'=>'rajendran',

array( 'username'=>'sudhina',

'nickname'=>'vivaan',

)

);

foreach($users as $key=>$val)

{

$search_value="vasanthan";

$output_display='';

if (in_array($search_value, $val,TRUE)) {

$output_display=$search_value;

break;

}

echo $output_display;

if search items found it will display the value you searched otherwise null value will display.