php代码测试功能的用法与技巧分享

<?php

function sum($a, $b) {
    return $a + $b;
}

$testCases = [
    [1, 2, 3],
    [10, -5, 5],
    [0, 0, 0],
];

foreach ($testCases as $testCase) {
    $result = sum($testCase[0], $testCase[1]);
    if ($result != $testCase[2]) {
        echo "Test failed: Expected {$testCase[2]}, but got {$result}
";
    }
}

<?php

class User {
    private $name;
    public function __construct($name) {
        $this->name = $name;
    }
    public function getName() {
        return $this->name;
    }
}

class UserService {
    public function getUserById($id) {
        // 通过id获取用户信息的逻辑
        // ...
        $user = new User("John Doe");
        return $user;
    }
}

class UserController {
    private $userService;
    public function __construct($userService) {
        $this->userService = $userService;
    }
    public function getUserByName($name) {
        $user = $this->userService->getUserById(123);
        if ($user->getName() == $name) {
            return $user;
        } else {
            return null;
        }
    }
}

// 测试UserController中的getUserByName方法
$userService = new UserService();
$userController = new UserController($userService);

$user = $userController->getUserByName("John Doe");
if ($user != null) {
    echo "Test passed
";
} else {
    echo "Test failed
";
}

<?php

$start = microtime(true);

// 执行需要测试性能的代码片段
for ($i = 0; $i < 10000; $i++) {
    // 一些操作
}

$end = microtime(true);
$time = $end - $start;
echo "Execution time: {$time} seconds
";

<?php

$input = $_GET['input'];

// 对输入进行过滤和验证
if (preg_match("/^[a-zA-Z0-9]+$/", $input)) {
    // 执行安全操作
} else {
    // 报错或者其他处理
}