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PHP method to dynamically read data and clear the rightmost margin
- 墨辰丷Original
- 2018-05-24 09:35:141166browse
This article mainly introduces the method of dynamically reading data and clearing the rightmost margin in PHP. Interested friends can refer to it. I hope it will be helpful to everyone.
Requirement effect in one row and three columns:
Scenario simulation: A colleague gave me this piece of static code As follows:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<style>
li,ul{padding: 0;margin:0;list-style: none;}
.box{
width:1000px;background: #ddd;height:500px;
}
.box li{margin:0 50px 20px 0;background:red;height:30px;width:300px;float: left;}
</style>
<body>
<p class="box">
<ul>
<?php
for($i=0;$i<9;$i++){
echo '<li></li>';
}
?>
</ul>
</p>
</body>
</html>
But the dynamic reading is unified? What should I do if the width is not enough? The wrong line wrapping effect is not what we want!
Solution 1: Style widening and hiding
<style>
li,ul{padding: 0;margin:0;list-style: none;}
.box{
width:1000px;background: #ddd;height:500px;overflow: hidden;
}
.box ul{width: 1200px;}
.box li{margin:0 50px 20px 0;background:red;height:30px;width:300px;float: left;}
</style>
Preview is normal:
Solution 2: PHP judgment, clear the rightmost column Margin
<p class="box">
<ul>
<?php
//列数
$col=3;
for($i=0;$i<9;$i++){
$margin_r = (($i%$col)==($col-1))?"margin-right:0;":"";//清除每行最右侧宝贝右边距
echo '<li style="'.$margin_r.'">'.$i%$col.'</li>';
}
?>
</ul>
</p>
##Option one and option two are both possible Achieve the same effect!
The above is the entire content of this article, I hope it will be helpful to everyone's study. Framework Thinkphp5 Simple implementation of behavioral hooks Hook
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