如何在 PHP 中通过整数索引访问关联数组?
phpserver side programmingprogramming更新于 2025/5/8 17:37:17
要在 PHP 中通过整数索引访问关联数组，代码如下−
示例
<?php $arr = array( "p"=>"150", "q"=>"100", "r"=>"120", "s"=>"110"); $keys = array_keys( $arr ); echo "Array key and value...
"; for($x = 0; $x < sizeof($arr); $x++ ) { echo "key: ". $keys[$x] . ", value: ". $arr[$keys[$x]] . "
"; } ?>
输出
这将产生以下输出−
Array key and value... key: p, value: 150 key: q, value: 100 key: r, value: 120 key: s, value: 110
示例
现在让我们看另一个例子−
<?php $arr = array( "p"=>"150", "q"=>"100", "r"=>"120", "s"=>"110"); $keys = array_keys( $arr ); echo "Array key and value...
"; for($x = 0; $x < sizeof($arr); $x++ ) { echo "key: ". $keys[$x] . ", value: ". $arr[$keys[$x]] . "
"; } $arr[$keys[2]] = "20"; $arr[$keys[3]] = "10"; echo "
Updated Array key and value...
"; for($x = 0; $x < sizeof($arr); $x++ ) { echo "key: ". $keys[$x] . ", value: ". $arr[$keys[$x]] . "
"; } ?>
输出
这将产生以下输出−
Array key and value... key: p, value: 150 key: q, value: 100 key: r, value: 120 key: s, value: 110 Updated Array key and value... key: p, value: 150 key: q, value: 100 key: r, value: 20 key: s, value: 10
