search php支持复杂查询语法吗

是的，PHP 支持复杂查询语法。PHP 提供了多种方法来执行复杂查询，例如使用 SQL 语句和数据库连接库。以下是一些示例：

1. 使用 SQL 语句：

<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";

// 创建连接
$conn = new mysqli($servername, $username, $password, $dbname);

// 检查连接
if ($conn->connect_error) {
    die("连接失败: " . $conn->connect_error);
}

// 执行复杂查询
$sql = "SELECT * FROM table1
JOIN table2 ON table1.id = table2.table1_id
WHERE table1.age > 18
ORDER BY table2.name ASC";
$result = $conn->query($sql);

if ($result->num_rows > 0) {
    // 输出查询结果
    while($row = $result->fetch_assoc()) {
        echo "id: " . $row["id"]. " - Name: " . $row["name"]. " - Age: " . $row["age"]. " - Table2 Name: " . $row["table2_name"]. "<br>";
    }
} else {
    echo "0 结果";
}
$conn->close();
?>

2. 使用 PDO（PHP Data Objects）库：

<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";

try {
    $conn = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password);
    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

    $stmt = $conn->prepare("SELECT * FROM table1
                            JOIN table2 ON table1.id = table2.table1_id
                            WHERE table1.age > 18
                            ORDER BY table2.name ASC");
    $stmt->execute();

    $result = $stmt->setFetchMode(PDO::FETCH_ASSOC);

    foreach($stmt->fetchAll() as $row) {
        echo "id: " . $row["id"]. " - Name: " . $row["name"]. " - Age: " . $row["age"]. " - Table2 Name: " . $row["table2_name"]. "<br>";
    }
} catch(PDOException $e) {
    echo "Error: " . $e->getMessage();
}

$conn = null;
?>

这两个示例都展示了如何在 PHP 中执行复杂查询。你可以根据自己的需求选择合适的方法。