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And that's basically it. With these basics down, you're ready to explore more powerful features like forms, databases, and user authentication. It's not complicated, but it does require attention to detail — especially around syntax and server behavior.<\/p>"}

Setting Up Your Environment

Writing Your First Script

Mixing PHP with HTML

Common Pitfalls and Tips

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您的第一個PHP腳本：實用介紹

Johnathan Smith

Jul 16, 2025 am 03:42 AM

php 程式設計

如何開始編寫第一個PHP腳本？首先設置本地開發(fā)環(huán)境，安裝XAMPP/MAMP/LAMP，使用文本編輯器，了解服務器運行原理。其次，創(chuàng)建一個名為hello.php的文件，輸入基本代碼並運行測試。第三，學習混合使用PHP與HTML以實現(xiàn)動態(tài)內(nèi)容輸出。最後，注意常見錯誤如缺少分號、引用問題及文件擴展名錯誤，並開啟錯誤報告以便調(diào)試。

Your First PHP Script: A Practical Introduction

So you've decided to try writing your first PHP script — good choice. PHP might not be the newest language on the block, but it's still widely used, especially for web development. If you're aiming to build dynamic websites or interact with databases, PHP is a solid tool to have in your kit.

Let's cut to the chase and walk through what you actually need to get started with your first working PHP script.

Setting Up Your Environment

Before you write any code, make sure your system is ready. PHP runs on a server, so unlike HTML or JavaScript, you can't just open a .php file in your browser and expect it to work.

Here's what you need:

A local server environment : Tools like XAMPP (Windows/Mac), MAMP (Mac), or LAMP (Linux) let you run PHP locally without needing an actual web host.
A text editor or IDE : VS Code, Sublime Text, or PHPStorm are popular choices.
Basic understanding of how servers work : You'll place your PHP files in a specific folder (like htdocs for XAMPP), and access them via http://localhost/your-file.php .

Once installed, test your setup by creating a simple PHP file and loading it in your browser.

Writing Your First Script

Now that your environment is ready, let's write something basic but useful. This script will display a message and show how PHP handles variables and basic logic.

Create a file called hello.php inside your server directory and add this:

 <?php
$name = "World";
echo "<h1>Hello, $name!</h1>";
?>

Open your browser and go to http://localhost/hello.php . You should see “Hello, World!” in heading style.

What's happening here:

The <?php ... ?> tags tell the server to treat everything inside as PHP code.
$name is a variable holding the string "World" .
echo outputs HTML content back to the browser.

This may seem simple, but it demonstrates two key concepts: storing data and outputting it dynamically.

Mixing PHP with HTML

One of PHP's strengths is its ability to seamlessly mix with HTML. You don't have to choose between generating HTML or processing logic — you can do both in the same file.

Here's an example where PHP decides what message to show based on the time of day:

 <!DOCTYPE html>
<html>
<head><title>Greeting</title></head>
<body>

<?php
$hour = date(&#39;G&#39;);
if ($hour < 12) {
    echo "<p>Good morning!</p>";
} else {
    echo "<p>Hello there!</p>";
}
?>

</body>
</html>

This script does a few things:

Uses date() to get the current hour.
Checks if it's before noon and displays a different greeting accordingly.
Outputs HTML from within PHP blocks.

You can switch back and forth between HTML and PHP as needed — just remember to close and reopen the PHP tags properly.

Common Pitfalls and Tips

Even small mistakes can break your script. Here are a few common issues beginners run into:

Forgetting semicolons at the end of each PHP statement.
Mixing up quotes and variables — double quotes allow variable interpolation; single quotes don't.
Not checking error logs — when something doesn't work, look at your server's error log. It often tells you exactly what went wrong.
Using incorrect file extensions — save files with .php , not .html .

Also, enable error reporting during development by adding this line at the top of your script:

 <?php
ini_set(&#39;display_errors&#39;, 1);
error_reporting(E_ALL);
?>

This helps catch mistakes early.

以上是您的第一個PHP腳本：實用介紹的詳細內(nèi)容。更多資訊請關注PHP中文網(wǎng)其他相關文章！

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您的第一個PHP腳本：實用介紹

Setting Up Your Environment

Writing Your First Script

Mixing PHP with HTML

Common Pitfalls and Tips

熱AI工具

Undress AI Tool

Undresser.AI Undress

AI Clothes Remover

Clothoff.io

Video Face Swap

熱門文章

熱工具

記事本++7.3.1

SublimeText3漢化版

禪工作室 13.0.1

Dreamweaver CS6

SublimeText3 Mac版

熱門話題