Php/func mysqli fetch array
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PHP mysqli fetch_array()函数
示例-面向对象的样式
以数字数组和关联数组的形式获取结果行:
<?php $mysqli = new mysqli("localhost","my_user","my_password","my_db"); if ($mysqli -> connect_errno) { echo "Failed to connect to MySQL: " . $mysqli -> connect_error; exit(); } $sql = "SELECT Lastname, Age FROM Persons ORDER BY Lastname"; $result -> $mysqli -> query($sql); // Numeric array $row = $result -> fetch_array(MYSQLI_NUM); printf ("%s (%s)\n", $row[0], $row[1]); // Associative array $row = $result -> fetch_array(MYSQLI_ASSOC); printf ("%s (%s)\n", $row["Lastname"], $row["Age"]); // Free result set $result -> free_result(); $mysqli -> close(); ?>
在底部查看程序样式的示例。
定义和用法
fetch_array()/ mysqli_fetch_array()函数以关联数组,数值数组或两者兼有的方式获取结果行。
注意: 从此函数返回的字段名称区分大小写。
句法
面向对象的样式:
$mysqli_result -> fetch_array(resulttype)
程序风格:
mysqli_fetch_array(result,resulttype)
参数值
参数 | 描述 |
---|---|
result | 需要。指定mysqli_query(),mysqli_store_result()或mysqli_use_result()返回的结果集标识符 |
resulttype |
可选的。指定应生成的数组类型。可以是以下值之一:
|
技术细节
返回值: | 返回与获取的行相对应的字符串数组。如果结果集中没有行,则为NULL |
PHP版本: | 5+ |
示例-程序风格
以数字数组和关联数组的形式获取结果行:
<?php $con=mysqli_connect("localhost","my_user","my_password","my_db"); if (mysqli_connect_errno()) { echo "Failed to connect to MySQL: " . mysqli_connect_error(); exit(); } $sql = "SELECT Lastname, Age FROM Persons ORDER BY Lastname"; $result = mysqli_query($con,$sql); // Numeric array $row = mysqli_fetch_array($result, MYSQLI_NUM); printf ("%s (%s)\n", $row[0], $row[1]); // Associative array $row = mysqli_fetch_array($result, MYSQLI_ASSOC); printf ("%s (%s)\n", $row["Lastname"], $row["Age"]); // Free result set mysqli_free_result($result); mysqli_close($con); ?>