mysqli_fetch_array()函数从结果集中取得一行作为关联数组，或数字数组，或二者兼有。
PHP result对象（mysqli_result类）表示MySQL结果，由SELECT或DESCRIBE或EXPLAIN查询返回。
mysqli_fetch_array()函数的作用是：接受一个结果对象作为参数，检索给定结果对象中当前行的内容，并将其作为关联数组或数值数组返回。
mysqli_fetch_array($result, [$type]);
| 序号 | 参数及说明 |
|---|---|
| 1 | result(必需) 这是表示结果对象的标识符。 |
| 2 | type(必需) 这是一个整数值，指定返回数组的类型。该type的值是以下值之一-
|
PHP mysqli_fetch_array()函数返回一个数组（关联或数字），该数组保存结果对象的当前行。如果没有更多行，此函数将返回NULL。
此函数最初是在PHP版本5中引入的，并且可以在所有更高版本中使用。
以下示例演示了mysqli_fetch_array()函数的用法（面向过程风格），从结果集中取得行作为数字数组或关联数组，并打印输出字段值：
<?php
$con = mysqli_connect("localhost", "root", "password", "mydb");
mysqli_query($con, "CREATE TABLE myplayers(ID INT, First_Name VARCHAR(255), Last_Name VARCHAR(255), Place_Of_Birth VARCHAR(255), Country VARCHAR(255))");
print("创建表.....\n");
mysqli_query($con, "INSERT INTO myplayers values(1, 'Sikhar', 'Dhawan', 'Delhi', 'India')");
mysqli_query($con, "INSERT INTO myplayers values(2, 'Jonathan', 'Trott', 'CapeTown', 'SouthAfrica')");
mysqli_query($con, "INSERT INTO myplayers values(3, 'Kumara', 'Sangakkara', 'Matale', 'Srilanka')");
print("插入记录.....\n");
//检索表的内容
$res = mysqli_query($con, "SELECT * FROM myplayers");
//获取所有行作为数组
while($row = mysqli_fetch_array($res, MYSQLI_ASSOC)){
print("ID: ".$row["ID"]."\n");
print("First_Name: ".$row["First_Name"]."\n");
print("Last_Name: ".$row["Last_Name"]."\n");
print("Place_Of_Birth: ".$row["Place_Of_Birth"]."\n");
print("Country: ".$row["Country"]."\n");
}
//结束语句
mysqli_free_result($res);
//关闭连接
mysqli_close($con);
?>输出结果
创建表..... 插入记录..... ID: 1 First_Name: Sikhar Last_Name: Dhawan Place_Of_Birth: Delhi Country: India ID: 2 First_Name: Jonathan Last_Name: Trott Place_Of_Birth: CapeTown Country: SouthAfrica ID: 3 First_Name: Kumara Last_Name: Sangakkara Place_Of_Birth: Matale Country: Srilanka
在面向对象风格中，此函数的语法为$result->fetch_array();。以下是面向对象风格中此函数的示例；
<?php
//建立连接
$con = new mysqli("localhost", "root", "password", "mydb");
$con -> query("CREATE TABLE Test(Name VARCHAR(255), Age INT)");
$con -> query("insert into Test values('Raju', 25),('Rahman', 30),('Sarmista', 27)");
print("创建表.....\n");
$stmt = $con -> prepare( "SELECT * FROM Test WHERE Name in(?, ?)");
$stmt -> bind_param("ss", $name1, $name2);
$name1 = 'Raju';
$name2 = 'Rahman';
//执行语句
$stmt->execute();
//检索结果
$result = $stmt->get_result();
//获取所有行作为数组
while($row = $result->fetch_array(MYSQLI_ASSOC)){
print("Name: ".$row["Name"]."\n");
print("Age: ".$row["Age"]."\n");
}
//结束语句
$stmt->close();
//关闭连接
$con->close();
?>输出结果
创建表..... Name: Raju Age: 25 Name: Rahman Age: 30
您还可以将结果行的内容检索为数字数组：
<?php
$con = mysqli_connect("localhost", "root", "password", "mydb");
mysqli_query($con, "CREATE TABLE myplayers(ID INT, First_Name VARCHAR(255), Last_Name VARCHAR(255), Place_Of_Birth VARCHAR(255), Country VARCHAR(255))");
print("创建表.....\n");
mysqli_query($con, "INSERT INTO myplayers values(1, 'Sikhar', 'Dhawan', 'Delhi', 'India')");
mysqli_query($con, "INSERT INTO myplayers values(2, 'Jonathan', 'Trott', 'CapeTown', 'SouthAfrica')");
mysqli_query($con, "INSERT INTO myplayers values(3, 'Kumara', 'Sangakkara', 'Matale', 'Srilanka')");
print("插入记录.....\n");
//检索表的内容
$res = mysqli_query($con, "SELECT * FROM myplayers");
//获取所有行作为数组
while($row = mysqli_fetch_array($res, MYSQLI_NUM)){
print("ID: ".$row[0]."\n");
print("First_Name: ".$row[1]."\n");
print("Last_Name: ".$row[2]."\n");
print("Place_Of_Birth: ".$row[3]."\n");
print("Country: ".$row[4]."\n");
}
//结束语句
mysqli_free_result($res);
//关闭连接
mysqli_close($con);
?>输出结果
创建表..... 插入记录..... ID: 1 First_Name: Sikhar Last_Name: Dhawan Place_Of_Birth: Delhi Country: India ID: 2 First_Name: Jonathan Last_Name: Trott Place_Of_Birth: CapeTown Country: SouthAfrica ID: 3 First_Name: Kumara Last_Name: Sangakkara Place_Of_Birth: Matale Country: Srilanka