vendor/topthink/think-helper/src/Str.php

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<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2015 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: yunwuxin <448901948@qq.com>
// +----------------------------------------------------------------------
namespace think\helper;

class Str
{

    protected static $snakeCache = [];

    protected static $camelCache = [];

    protected static $studlyCache = [];

    /**
     * 检查字符串中是否包含某些字符串
     * @param string       $haystack
     * @param string|array $needles
     * @return bool
     */
    public static function contains($haystack, $needles)
    {
        foreach ((array) $needles as $needle) {
            if ($needle != '' && mb_strpos($haystack, $needle) !== false) {
                return true;
            }
        }

        return false;
    }

    /**
     * 检查字符串是否以某些字符串结尾
     *
     * @param  string       $haystack
     * @param  string|array $needles
     * @return bool
     */
    public static function endsWith($haystack, $needles)
    {
        foreach ((array) $needles as $needle) {
            if ((string) $needle === static::substr($haystack, -static::length($needle))) {
                return true;
            }
        }

        return false;
    }

    /**
     * 检查字符串是否以某些字符串开头
     *
     * @param  string       $haystack