Php filter array

Array filter use key

$my_array = ['foo' => 1, 'hello' => 'world'];
$allowed  = ['foo', 'bar'];
$filtered = array_filter(
    $my_array,
    function ($key) use ($allowed) {
        return in_array($key, $allowed);
    },
    ARRAY_FILTER_USE_KEY
);

Source: stackoverflow.com

Php filter array

$numbers = [-2, 4, -6, 8, 10];

function isPositive($number)
{
  return $number > 0;
}

$filteredArray = array_filter($numbers, "isPositive");

Php array filter

<?php

$arr = ['a' => 1, 'b' => 2, 'c' => 3, 'd' => 4];

var_dump(array_filter($arr, function($k) {
    return $k == 'b';
}, ARRAY_FILTER_USE_KEY));

var_dump(array_filter($arr, function($v, $k) {
    return $k == 'b' || $v == 4;
}, ARRAY_FILTER_USE_BOTH));
?>

Source: php.net

Php array_filter

$array = [1, 2, 3, 4, 5];

$filtered = array_filter($array, function($item) {
    return $item != 4; // Return (include) current item if expression is truthy
});

// $filtered = [1, 2, 3, 5]

Source: php.net

Array_filter php

$var = [
  'first' => 'one',
  'second' => null,
  'third' => 'three',
];


$filteredArray = array_filter($var);
// output: ['first'=>'one,'third'=>'three']

-2

Similar codes

0 vote348 views2 answers
How to check if username already exists in php
PHP
8 votes341 views1 answer
How to list out routes
PHP
3 votes323 views3 answers
Laravel get a url using name
PHP
1 vote389 views1 answer
Header cros orgin using php
PHP
-1 vote426 views3 answers
Laravel except route
PHP Laravel
1 vote279 views2 answers
Php disable errors
PHP
0 vote322 views1 answer
How do istart writing a php code
PHP
0 vote356 views1 answer
How to import in laravel excel command
PHP Laravel
0 vote320 views2 answers
Yii2 set cookie
PHP
0 vote312 views1 answer
Get the matched value from 2 array in php
PHP