如何在 PHP 中重新索引数组?
phpserver side programmingprogramming更新于 2025/7/8 3:22:17
要在 PHP 中重新索引数组，代码如下 −
示例
<?php $arr = array( 0=>"150", 1=>"100", 2=>"120", 3=>"110", 4=>"115" ); echo "数组...
"; foreach( $arr as $key => $value) { echo " Key = " . $key . ", Value = " . $value . "
"; } $arr = array_combine(range(2, count($arr) + (1)), array_values($arr)); echo "
Array after re-indexing
"; foreach( $arr as $key => $value) { echo " Key = " . $key . ", Value = " . $value . "
"; } ?>
输出
这将产生以下输出−
数组... Key = 0, Value = 150 Key = 1, Value = 100 Key = 2, Value = 120 Key = 3, Value = 110 Key = 4, Value = 115 Array after re-indexing Key = 2, Value = 150 Key = 3, Value = 100 Key = 4, Value = 120 Key = 5, Value = 110 Key = 6, Value = 115
示例
现在让我们看另一个例子 −
<?php $arr = array( "a"=>"150", "b"=>"100", "c"=>"120", "d" =>"110", "e"=>"115" ); echo "数组...
"; foreach( $arr as $key => $value) { echo " Key = " . $key . ", Value = " . $value . "
"; } $arr = array_combine(range("b", chr(count($arr) + (ord("b")-1))), array_values($arr)); echo "
Array after re-indexing
"; foreach( $arr as $key => $value) { echo " Key = " . $key . ", Value = " . $value . "
"; } ?>
输出
这将产生以下输出−
数组... Key = a, Value = 150 Key = b, Value = 100 Key = c, Value = 120 Key = d, Value = 110 Key = e, Value = 115 Array after re-indexing Key = b, Value = 150 Key = c, Value = 100 Key = d, Value = 120 Key = e, Value = 110 Key = f, Value = 115
