array_all

(PHP 8 >= 8.4.0)

array_all —Checks if allarray elements satisfy a callback function

Description

array_all(array$array,callable$callback):bool

array_all() returnstrue, if the givencallback returnstrue for all elements. Otherwise the function returnsfalse.

Parameters

array

Thearray that should be searched.

callback

The callback function to call to check each element, which must be

callback(mixed$value,mixed$key):bool

If this function returnsfalse,false is returned fromarray_all() and the callback will not be called for further elements.

Return Values

The function returnstrue, ifcallback returnstrue for all elements. Otherwise the function returnsfalse.

Examples

Example #1array_all() example

<?php
$array= [
'a'=>'dog',
'b'=>'cat',
'c'=>'cow',
'd'=>'duck',
'e'=>'goose',
'f'=>'elephant'
];

// Check, if all animal names are shorter than 12 letters.
var_dump(array_all($array, function (string $value) {
    returnstrlen($value) <12;
}));

// Check, if all animal names are longer than 5 letters.
var_dump(array_all($array, function (string $value) {
    returnstrlen($value) >5;
}));

// Check, if all array keys are strings.
var_dump(array_all($array, function (string $value,$key) {
   returnis_string($key);
}));
?>

The above example will output:

bool(true)bool(false)bool(true)

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User Contributed Notes1 note

down

Anonymous ¶

8 months ago

if (! function_exists('array_all')) {    function array_all(array $array, callable $callable) {        foreach ($array as $key => $value) {            if (! $callable($value, $key))                return false;        }        return true;    }}