php 两层foreach循环如何给里层循环变量设置初始值=0
$question): ?>
$answer): ?>
如何在里层循环完之后 第二次里层循环时让$i的值从0开始,而不是接着上次循环的值继续
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不明白你的意思,举例说明。或者说明一下你想怎样输出。
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<br /><?php<br />echo '<meta http-equiv="content-type" content="text/html;charset=utf-8">';<br /><br />$questions = array(<br /> '问题1',<br /> '问题2',<br /> '问题3'<br />);<br /><br />$answers = array(<br /> array('选项a','选项b'),<br /> array('选项c','选项d'),<br /> array('选项e','选项f')<br />);<br /><br />foreach($questions as $k=>$question){<br /> echo 'Q'.($k+1).'<br>';<br /> foreach($answers[$k] as $i=>$answer){<br /> echo 'option'.($i+1).' '.$answer.'<br>';<br /> }<br /> echo '<br>';<br />}<br />?><br />
Q1
option1 选项a
option2 选项b
Q2
option1 选项c
option2 选项d
Q3
option1 选项e
option2 选项f
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#3 代码
第8行改为
第14行改为
内层每次都要遍历 $answers 数组,而只取少量数据
有点得不偿失,建议调整一下数据组织方式(参考#4)
当然也可以在主循环开始前先对 $answers 做聚类处理

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