<?php
$arr = array('1', '', '2', '3', '0');
// Incorrect:
print_r(array_filter($arr));
// Correct:
print_r(array_filter($arr, 'strlen'));
//Custom
print_r(array_filter($arr, function ($val) {if ($val > 0) {return true;} else {return false;}}));// One liner to remove empty ("" empty string) elements from your array.
// Note: This code deliberately keeps null, 0 and false elements.
$array = array_filter($array, function($a) {return $a !== "";});
// OR if you want to trim your array elements first:
// Note: This code also removes null and false elements.
$array = array_filter($array, function($a) {
return trim($a) !== "";
});<?php
$array = array("apple", "", 0, 2, null, -5, "0", "orange", 10, false);
var_dump($array);
echo "<br>";
// Filtering the array
$result = array_filter($array);
var_dump($result);
?>array_filter