PHP Manual
Map
Determines whether the map contains a given value

Ds\Map::hasValue

(PECL ds >= 1.0.0)

Ds\Map::hasValue — Determines whether the map contains a given value

说明

public Ds\Map::hasValue ( mixed $value ) : bool

Determines whether the map contains a given value.

参数

value: The value to look for.

返回值

Returns TRUE if the value could found, FALSE otherwise.

范例

Example #1 Ds\Map::hasValue() example

 <?php
$map = new \Ds\Map(["a" => 1, "b" => 2, "c" => 3]);

var_dump($map->hasValue(1)); // true
var_dump($map->hasValue(4)); // false
?>

以上例程的输出类似于：

bool(true)
bool(false)

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