Ds\Sequence::find

(PECL ds >= 1.0.0)

Ds\Sequence::find — Attempts to find a value's index

说明

abstract public Ds\Sequence::find ( mixed $value ) : mixed

Returns the index of the value, or FALSE if not found.

参数

value: The value to find.

返回值

The index of the value, or FALSE if not found.

Note:
Values will be compared by value and by type.

范例

Example #1 Ds\Sequence::find() example


<?php
$sequence = new \Ds\Vector(["a", 1, true]);

var_dump($sequence->find("a")); // 0
var_dump($sequence->find("b")); // false
var_dump($sequence->find("1")); // false
var_dump($sequence->find(1));   // 1
?>

以上例程的输出类似于：

int(0)
bool(false)
bool(false)
int(1)