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如何判断一个checkbox已选

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Release: 2016-06-13 10:52:11
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怎么判断一个checkbox已选?

HTML code
<!--Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--><input type="checkbox" onclick="selectAll()" id="choose_all" value="<?php if?> checked==" checked echo>">全选
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我要取value的值,要求已选的时候是0,否则为空。上面的写法不对,求改正!

------解决方案--------------------
仿照着这个写就好了
checkbox解决方法
html
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php
$zixun1 = $_POST["zixun1"];
for($i=0;$iecho $zixun1[$i]."
"
?>
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