php 判断是什么类型,php 类型判断

学习笔记

//判断数组 $colors = array("red"php判断, "blue", "green"); if(is_array($colors)) { echo("colors is an array"."

"); } //双精度数判断 $Temperature = 15.23; if(is_double($Temperature)) { echo("$Temperature is a double"."

"); } //整数判断 $PageCount = 2234; if(is_integer($PageCount)) { echo("$PageCount is an integer"."

"); } //对象判断 class widget { var $name; var $length; } $thing = new widget; if(is_object($thing)) { echo("thing is an object"."

"); } //字符判断 $Greeting = "Hello"; if(is_string($Greeting)) { echo("$Greeting is a string"."

"); } //数字判断 $Num=1002; if(is_int($Num)){ echo("$Num is a int"."

"); } ?>

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