PHP获取数组中某元素的位置实例

2014-04-22 为码而活 PHP教程 关注1.28K次 已收录
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正文概述

判断数组元素位置我们可以使用array_keys函数与foreach对比来实现.

array_keys的语法如下：

array_keys(array,value,[strict])

其中strict设置为true将触发数据类型校验的严格匹配模式,默认为false,下边的代码展示了array_keys的一个简单应用,代码如下:

  1. <?php 
  2. $test=array(10,20,30,"10","20","30"); 
  3. print_r(array_keys($test,"10",true));//严格匹配模式 
  4. //输出： 
  5. //Array ( [0] => 3) 
  6. ?> 

当然我们还可以使用 foreach 加判断了,代码如下:

  1. $one = array(1, 2, 3, 4); 
  2. $two = array("test1" =>array('name'=>"tank","phone"=>12412433), 
  3.  "test2"&nbsp; => array('name'=>"ying","phone"=>252523523), 
  4.  "test3" => array('name'=>"zhang","phone"=>656452345),); 
  5. foreach ($one as $k=>$v) { 
  6.  echo "key=".$k."&amp;value=".$v."&lt;br>"; 
  7. } 
  8. $i=0; 
  9. foreach ($two as $k=>$v) { 
  10.  foreach($v as $value){ 
  11.   if( $v='tank' ) 
  12.         { 
  13.            echo $i; 
  14.          } 
  15.           $i++; 
  16.  } 
  17. } 

后面这个是利用遍历数组然后加一值的对比就可以判断出来了.

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