1.分割与合并implode:echo implode(“,”, array(‘lastname’, ’email’, ‘phone’));//数组转成字符串explode:print_r(explode(“,”, ‘lastname,email,phone’));//字符串转成数组split:print_r(split(“[/.-]”,”2008-9.12′′));//以/或.或-任一符号切成数组str_split:print_r(str_split(“Hello Friend”,1));//将字符串切开preg_split://正则分割//$ops = preg_split(“{[+*/-]