<HTML> <HEAD> <TITLE>常用的数值判断函数</TITLE> </HEAD> <BODY> <? //判断数组 colors = array("red", "blue", "green"); if(is_array(colors)) { print("colors is an array"."<br>"); } //双精度数判断 Temperature = 15.23; if(is_double(Temperature)) { print("Temperature is a double"."<br>"); } //整数判断 PageCount = 2234; if(is_integer(PageCount)) { print("PageCount is an integer"."<br>"); } //对象判断 class widget { var name; var length; } thing = new widget; if(is_object(thing)) { print("thing is an object"."<br>"); } //字符判断 Greeting = "Hello"; if(is_string(Greeting)) { print("Greeting is a string"."<br>"); } ?> </BODY> </HTML>
