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Homephp教程php手册PHP中接收复选框信息的方法

复选框

PHP接收多个同名复选框信息不像ASP那样自动转换成为数组,这给使用带来了一定不便。但是还是有解决办法的,就是利用JavaScript做一下预处理。多个同名复选框在JavaScript中还是以数组的形式存在的,所以在表单提交之前可以利用JavaScript把复选框中的信息组合成一个字符数组赋值给表单中的隐藏元素,然后用PHP中的explode函数解析此数组,这样就可以实现复选框信息的传递了。下面举例说明。
假设有这样一个表单:



1


2


3


4








这个表单有四个名字都是item的复选框,当用户单击Submit按钮的时候,Checker函数会被调用,并且如果Checker返回true表单就被提交,返回false表单就不会被提交。这里Checker函数就是我们要编写的预处理函数。在HTML的header部分添加下面的JavaScript:



这样就可以把所有选中的复选框的value组合成为一个字符串数组,在myphp.php使用这样的语句:

$items = explode(" ", $HTTP_POST_VARS["items"]);

就可以把这些选项分离出来成为数组。需要注意的是选项中的value不能包含分割符(这里是空格)。



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