ConFoo 2025

array_all

(PHP 8 >= 8.4.0)

array_allChecks if all array elements satisfy a callback function

说明

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

array_all() returns true, if the given callback returns true for all elements. Otherwise the function returns false.

参数

array
The array 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 returns false, false is returned from array_all() and the callback will not be called for further elements.

返回值

The function returns true, if callback returns true for all elements. Otherwise the function returns false.

示例

示例 #1 array_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 $value) {
return
strlen($value) < 12;
}));

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

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

以上示例会输出:

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

参见

  • array_any() - Checks if at least one array element satisfies a callback function
  • array_filter() - 使用回调函数过滤数组的元素
  • array_find() - Returns the first element satisfying a callback function
  • array_find_key() - Returns the key of the first element satisfying a callback function
添加备注

用户贡献的备注

此页面尚无用户贡献的备注。
To Top