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
);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
);php array filter syntax
$numbers = [2, 4, 6, 8, 10];
function MyFunction($number)
{
return $number > 5;
}
$filteredArray = array_filter($numbers, "MyFunction");
/**
* `$filteredArray` now contains: `[6, 8, 10]`
* NB: Use this to remove what you don't want in the array
* @see `array_map` when you want to alter/change elements
* in the array.
*/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));
?>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]php filter array
$numbers = [-2, 4, -6, 8, 10];
function isPositive($number)
{
return $number > 0;
}
$filteredArray = array_filter($numbers, "isPositive");Copyright © 2021 Codeinu
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