PHP Ds Sequence contains()用法及代碼示例

Ds\Sequence::contains() 函數可以確定序列是否包含給定值。

用法

public abstract bool Ds\Sequence::contains([ mixed $...values ] )

Ds\Sequence::contains() 函數可以確定一個序列是否包含所有值。

Ds\Sequence::contains() 函數可以在任何提供的值不在序列中時返回 false，否則返回 true。

示例

<?php
   $sequence = new \Ds\Vector(["a", "b", "c", 1, 2, 3]);
   
   var_dump($sequence->contains("a"));
   var_dump($sequence->contains("a", "b"));
   var_dump($sequence->contains("c", "d")); 
   var_dump($sequence->contains(...["c", "b", "a"])); 
   var_dump($sequence->contains(1));
   var_dump($sequence->contains("1"));
   var_dump($sequece->contains(...[]));  //  true
?>