Filter Array by a condition in PHP

PHP array_filter() function filters elements of an array using a callback function and returns the filtered array. Here we’ll provide a PHP code to filter elements of an array that contain a specific value. It will help you to filter an array based on particular condition.

The following example code will filter the elements of a multidimensional array by value using array_filter() functions in PHP.

$newArr = array(
 array(
  'name' => 'Fine',
  'amount' => 1000
 ) ,
 array(
  'name' => 'Transport Fee',
  'amount' => 0
 ) ,
 array(
  'name' => 'Cheque Bounce',
  'amount' => 50
 ) ,
 array(
  'name' => 'TC',
  'amount' => 100
 )
);
$filterArray = array_filter($newArr,
function ($var)
 {
 return ($var['amount'] != 0);
 });
// Output the filtered array
print_r($filterArray);

//OUTPUT 
Array(
 [0] => Array(
  [name] => Fine
  [amount] => 1000
 ) [2] => Array(
  [name] => ChequeBounce
  [amount] => 50
 ) [3] => Array(
  [name] => TC
  [amount] => 100
 )
)

And here is another example code will filter the elements of a an array by value using array_filter()  and strpos() functions in PHP.

$array = array(
    'month' => 'January',
    'month2' => 'February',
    'month3' => 'March'
);

$filterArray = array_filter($array, function ($var) {
    return (strpos($var, 'Jan') === false);
});

// Output the filtered array
print_r($filterArray);

//OUTPUT
Array(
 [month2] => February
 [month3] => March
)