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PHP 變得簡單：Web 開發的第一步

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發布： 2024-10-11 14:21:21

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PHP簡介：PHP是一種開源的Web開發腳本語言。 PHP文法簡單，適合初學者。基本語法：使用標籤來表示PHP程式碼。變數以$符號開頭（例：$username）。資料類型包括字串、數字、浮點數、布林值和陣列。條件語句（如if）根據條件控製程式碼流。迴圈（如for）允許重複執行程式碼區塊。 PHP支援與資料庫（如MySQL）的連線。實作範例：建立一個PHP腳本，顯示「Hello, World!」和目前時間。

PHP Made Easy: Your First Steps in Web Development

PHP Made Easy: Your First Steps in Web Development

Introduction

Introduction

Setting Up PHP

To run PHP scripts, you'll need a web server with PHP installed. Popular web servers include, Nginx, Apude IIS. Once PHP is installed, you can create and edit PHP files using any text editor or IDE.

Basic Syntax

<?php
// PHP code here
?>

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<Basic Syntax

$username = "John Doe";
$age = 25;

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Variables

Variables store data in PHP and have a dolsign (gettype()Variables.

Data Types

PHP supports various data types, including strings, integers, floats, booleans, and arrays Youscan can. check the type of a variable.

if ($username == "John Doe") {
    echo "Welcome, John!";
} else {
    echo "Who are you?";
}

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Conditionals

Conditional statements control the flow of your code based on certain conditions:

for ($i = 0; $i < 10; $i++) {
    echo "Number: $i";
}

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$servername = "localhost";
$username = "root";
$password = "";
$dbname = "myDB";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);

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<!DOCTYPE html>
<html>
<head>
    <title>My PHP Script</title>
</head>
<body>
    <h1><?php echo "Hello, World!"; ?></h1>
    <p>Current time: <?php echo date("h:i"); ?></p>
</body>
</html>

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>Loops

Loops allow you to repeat a block of code multiple times:Connecting to a DatabasePHP has built-in support for connecting to databases, such as MySQL and PostgreSQL:Practical ExampleLet's create fat the current time:ConclusionThis article provided a quick overview of the basics of PHP. By understanding article provided and quick overview of the basics of PHP. By understanding its syntax and quick datals, control. you can begin building simple PHP applications. As you gain experience, you can explore more advanced features and use PHP to create dynamic and interactive web pages.

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