if(document.form.interest.checked==true){
document.form.interest.value=1
}else{
document.form.interest.value=0
}
document.form.interest.value=1
}else{
document.form.interest.value=0
}
调试欢乐多
<?php
foreach($_POST[interest] as $v) $value+=pow(2,$v);
for($c=0;$c<$_POST[length];$c++) $str.=pow(2,$c)&$value?1:0;
echo $str;
?>html:
<form action="1.php" method="post">
<input type="checkbox" name="interest[]" value="0">赚钱0
<input type="checkbox" name="interest[]" value="1">赚钱1
<input type="checkbox" name="interest[]" value="2">赚钱2
<input type="checkbox" name="interest[]" value="3">赚钱3
<input type="checkbox" name="interest[]" value="4">赚钱4
<input type="checkbox" name="interest[]" value="5">赚钱5
<input type="checkbox" name="interest[]" value="6">赚钱6
<input type="hidden" name="length" value="7">
//这个hidden值为checkbox的数量
<input type="submit">
</form>