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foreach loop statement in PHP

巴扎黑
巴扎黑Original
2016-12-28 17:41:131572browse

One syntax

foreach(array_expression as $value)

statement;

foreach(array_expression as $key=>$value)

statement;

The foreach statement will traverse the array array_expression. Each time it loops, the value in the current array is assigned to $value (or $key and $value). At the same time, the pointer of the array moves backward until After the traversal is completed, the array pointer will be automatically reset when using foreach, so there is no need to manually set the position of the pointer.

2 Example

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>应用foreach语句遍历数组</title>
</head>
<style type="text/css">
<!--
.STYLE1 {font-size: 13px;
       color: #FF0000;
font-weight: bold;
}
.STYLE2 {font-size: 13px;
      
}
-->
</style>
<body>
<?php
$name = array("1"=>"品牌笔记本电脑","2"=>"高档男士衬衫","3"=>"品牌3G手机","4"=>"高档女士挎包");
$price = array("1"=>"4998元","2"=>"588元","3"=>"4666元","4"=>"698元");
$counts = array("1"=>1,"2"=>1,"3"=>2,"4"=>1);
echo &#39;<table width="580" border="1" cellpadding="1" cellspacing="1" bordercolor="#FFFFFF" bgcolor="#FF0000">
          <tr>
            <td width="145" align="center" bgcolor="#FFFFFF"  class="STYLE1">商品名称</td>
            <td width="145" align="center" bgcolor="#FFFFFF"  class="STYLE1">价 格</td>
            <td width="145" align="center" bgcolor="#FFFFFF"  class="STYLE1">数量</td>
            <td width="145" align="center" bgcolor="#FFFFFF"  class="STYLE1">金额</td>
 </tr>&#39;;
foreach($name as $key=>$value){  //以book数组做循环，输出键和值
     echo &#39;<tr>
            <td height="25" align="center" bgcolor="#FFFFFF" class="STYLE2">&#39;.$value.&#39;</td>
            <td align="center" bgcolor="#FFFFFF" class="STYLE2">&#39;.$price[$key].&#39;</td>    
            <td align="center" bgcolor="#FFFFFF" class="STYLE2">&#39;.$counts[$key].&#39;</td>
            <td align="center" bgcolor="#FFFFFF" class="STYLE2">&#39;.$counts[$key]*$price[$key].&#39;</td>
</tr>&#39;;
}
echo &#39;</table>&#39;;
?>
</body>
</html>

3 Running result

foreach loop statement in PHP

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