说明

dump方法，用于输出变量的信息到浏览器查看

语法

dump($var,$echo=true,$label=null)

参数解析

参数描述var（必须）要输出的变量，支持所有变量类型echo（可选）是否直接输出，默认为true，如果为false则返回但不输出label（可选）变量输出的label标识，默认为空

示例

dump($memberList,$echo=true,$label=null);

输出

array(size=4)0=>array(size=3)'id'=>int0'name'=>string'thinkphp'(length=8)'score'=>int11=>array(size=3)'id'=>int4'name'=>string'zhangsan4'(length=9)'score'=>int02=>array(size=3)'id'=>int5'name'=>string'zhangsan5'(length=9)'score'=>int03=>array(size=3)'id'=>int6'name'=>string'zhangsan6'(length=9)'score'=>int0

注意

echo参数为false则返回要输出的字符串

示例

$str=dump($memberList,$echo=false,$label=null);print_r($str);

输出

array(size=4)0=>array(size=3)'id'=>int0'name'=>string'thinkphp'(length=8)'score'=>int11=>array(size=3)'id'=>int4'name'=>string'zhangsan4'(length=9)'score'=>int02=>array(size=3)'id'=>int5'name'=>string'zhangsan5'(length=9)'score'=>int03=>array(size=3)'id'=>int6'name'=>string'zhangsan6'(length=9)'score'=>int0