PHP 中的 mysqli fetch all函数

mysqli fetch all - 语法

mysqli_fetch_all(result,resulttype);

它用于提取所有输出行，并将输出集作为关联数组返回

mysqli fetch all - 返回值

它返回一个包含输出行的关联数组。

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mysqli fetch all - 示例

<?php
   $connection_mysql=mysqli_connect("localhost","user","pass","db");
   
   if (mysqli_connect_errno($connection_mysql)){
      echo "Failed to connect to MySQL: " . mysqli_connect_error();
   }
   
   $sql="SELECT name FROM emp";
   $result=mysqli_query($connection_mysql,$sql);
   
   mysqli_fetch_all($result,MYSQLI_ASSOC);
   mysqli_free_result($result);
   mysqli_close($connection_mysql);
?>