在 PHP 中刪除陣列元素和重新分配索引

要刪除一個數組元素並對其重新分配索引，其程式碼如下−

示例

 實踐演示

<?php
   $arr = array( " John ", "Jacob ", " Tom ", " Tim ");
   echo "Array with leading and trailing whitespaces...
";
   foreach( $arr as $value ) {
      echo "Value = $value 
";
   }
   echo "
Comma separated list...
";
   print_r(implode(', ', $arr));
   $result = array_map('trim', $arr);
   echo "
Updated Array...
";
   foreach( $result as $value ) {
      echo "Value = $value 
";
   }
   unset($result[1]);
   echo "
Updated Array...Re-indexed
";
   $result2 = array_values($result);
   foreach( $result2 as $value ) {
      echo "Value = $value 
";
   }
?>

輸出

將產生以下輸出−

Array with leading and trailing whitespaces...
Value = John
Value = Jacob
Value = Tom
Value = Tim
Comma separated list...
John , Jacob , Tom , Tim
Updated Array...
Value = John
Value = Jacob
Value = Tom
Value = Tim
Updated Array...Re-indexed
Value = John
Value = Tom
Value = Tim

更新於：2019-12-27

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