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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"1true]);

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)