PHP作为一种流行的Web开发语言,进入公司通常需要具备以下技能:
- 熟练掌握PHP语言基础,包括变量、数组、函数、类等基本语法。
演示代码:
<?php
// 变量
$name = "Tom";
$age = 18;
// 数组
$fruits = array("apple", "banana", "orange");
// 函数
function add($a, $b) {
return $a + $b;
}
// 类
class Person {
public $name;
public $age;
public function __construct($name, $age) {
$this->name = $name;
$this->age = $age;
}
public function sayHi() {
echo "Hi, my name is ".$this->name." and I am ".$this->age." years old.";
}
}
// 使用
echo $name; // 输出Tom
echo $fruits[1]; // 输出banana
echo add(3, 5); // 输出8
$person = new Person("Tom", 18);
$person->sayHi(); // 输出Hi, my name is Tom and I am 18 years old.
?>
- 熟练掌握常用的PHP框架,例如Laravel、Symfony等。
演示代码:
// Laravel示例
Route::get("/", function () {
return view("welcome");
});
// Symfony示例
use SymfonyComponentHttpFoundationResponse;
function hello() {
$response = new Response();
$response->setContent("Hello World!");
return $response;
}
- 熟练掌握MySQL等数据库相关知识,能够进行数据库设计和开发。
演示代码:
// 连接MySQL数据库
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "myDB";
$conn = new mysqli($servername, $username, $password, $dbname);
// 查询数据
$sql = "SELECT id, name, age FROM users";
$result = $conn->query($sql);
if ($result->num_rows > 0) {
while($row = $result->fetch_assoc()) {
echo "id: " . $row["id"]. " - Name: " . $row["name"]. " - Age: " . $row["age"]. "<br>";
}
} else {
echo "0 results";
}
// 插入数据
$sql = "INSERT INTO users (name, age) VALUES ("Tom", "18")";
if ($conn->query($sql) === TRUE) {
echo "New record created successfully";
} else {
echo "Error: " . $sql . "<br>" . $conn->error;
}
$conn->close();