PHP Exercises

Last modified on: October 19, 2024

<div class="flex-shrink-0 flex flex-col relative items-end">
<div>
<div class="pt-0">
<div class="gizmo-bot-avatar flex h-8 w-8 items-center justify-center overflow-hidden rounded-full">
<div class="relative p-1 rounded-sm flex items-center justify-center bg-token-main-surface-primary text-token-text-primary h-8 w-8">&nbsp;</div>
</div>
</div>
</div>
</div>
<div class="group/conversation-turn relative flex w-full min-w-0 flex-col agent-turn">
<div class="flex-col gap-1 md:gap-3">
<div class="flex max-w-full flex-col flex-grow">
<div class="min-h-[20px] text-message flex w-full flex-col items-end gap-2 whitespace-normal break-words [.text-message+&amp;]:mt-5" dir="auto" data-message-author-role="assistant" data-message-id="955b3afd-249e-483f-8d3a-72dbc90f98fe">
<div class="flex w-full flex-col gap-1 empty:hidden first:pt-[3px]">
<div class="markdown prose w-full break-words dark:prose-invert light">
<p>Here are some PHP exercises to help reinforce your understanding of various concepts. Each exercise is followed by a brief description of what it aims to teach.</p>
<h3>1. Hello World</h3>
<p><strong>Exercise</strong>: Write a PHP script that outputs "Hello, World!" to the browser.</p>
<div class="dark bg-gray-950 contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative">
<div class="flex items-center text-token-text-secondary bg-token-main-surface-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9">
<pre class="language-php"><code>&lt;?php
// Your code here
?&gt;</code></pre>
</div>
</div>
<h3>2. Variable Manipulation</h3>
<p><strong>Exercise</strong>: Create variables for your name, age, and favorite color, and output them in a sentence.</p>
<div class="dark bg-gray-950 contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative">
<div class="flex items-center text-token-text-secondary bg-token-main-surface-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9">
<pre class="language-php"><code>&lt;?php
// Your code here
?&gt;</code></pre>
</div>
</div>
<h3>3. Conditional Statements</h3>
<p><strong>Exercise</strong>: Write a script that checks if a number is even or odd. Output an appropriate message.</p>
<div class="dark bg-gray-950 contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative">
<div class="flex items-center text-token-text-secondary bg-token-main-surface-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9">
<pre class="language-php"><code>&lt;?php
$number = 10; // Change this number for testing
// Your code here
?&gt;</code></pre>
</div>
</div>
<h3>4. Looping Through an Array</h3>
<p><strong>Exercise</strong>: Create an array of five fruits and use a loop to print each fruit in a list.</p>
<div class="dark bg-gray-950 contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative">
<div class="flex items-center text-token-text-secondary bg-token-main-surface-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9">
<pre class="language-php"><code>&lt;?php
$fruits = ["Apple", "Banana", "Cherry", "Date", "Elderberry"];
// Your code here
?&gt;</code></pre>
</div>
</div>
<h3>5. Functions</h3>
<p><strong>Exercise</strong>: Write a function that takes two numbers as parameters and returns their sum. Call the function and display the result.</p>
<div class="dark bg-gray-950 contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative">
<div class="flex items-center text-token-text-secondary bg-token-main-surface-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9">
<pre class="language-php"><code>&lt;?php
// Your function here

// Call the function and display the result
?&gt;</code></pre>
</div>
</div>
<h3>6. Form Handling</h3>
<p><strong>Exercise</strong>: Create a simple HTML form that asks for a user's name and displays a greeting after submission.</p>
<div class="dark bg-gray-950 contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative">
<div class="flex items-center text-token-text-secondary bg-token-main-surface-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9">html</div>
<div class="sticky top-9 md:top-[5.75rem]">
<div class="absolute bottom-0 right-2 flex h-9 items-center">
<div class="flex items-center rounded bg-token-main-surface-secondary px-2 font-sans text-xs text-token-text-secondary">
<pre class="language-markup"><code>&lt;form method="post" action="greet.php"&gt;
    Name: &lt;input type="text" name="name"&gt;
    &lt;input type="submit"&gt;
&lt;/form&gt;</code></pre>
</div>
</div>
</div>
</div>
<div class="dark bg-gray-950 contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative">
<div class="flex items-center text-token-text-secondary bg-token-main-surface-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9">
<pre class="language-php"><code>// greet.php
&lt;?php
// Your code to handle form submission here
?&gt;</code></pre>
</div>
</div>
<h3>7. File Handling</h3>
<p><strong>Exercise</strong>: Write a script that creates a file called <code>test.txt</code>, writes "Hello, File!" to it, and then reads and displays the content.</p>
<div class="dark bg-gray-950 contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative">
<div class="flex items-center text-token-text-secondary bg-token-main-surface-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9">
<pre class="language-php"><code>&lt;?php
// Your file handling code here
?&gt;</code></pre>
</div>
</div>
<h3>8. Sessions</h3>
<p><strong>Exercise</strong>: Start a session, store a username in the session, and display a welcome message using that username.</p>
<div class="dark bg-gray-950 contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative">
<div class="flex items-center text-token-text-secondary bg-token-main-surface-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9">
<pre class="language-php"><code>&lt;?php
session_start();
// Your session code here
?&gt;</code></pre>
</div>
</div>
<h3>9. Database Connection</h3>
<p><strong>Exercise</strong>: Write a script that connects to a MySQL database and retrieves all rows from a table called <code>users</code>.</p>
<div class="dark bg-gray-950 contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative">
<div class="flex items-center text-token-text-secondary bg-token-main-surface-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9">
<pre class="language-php"><code>&lt;?php
// Your database connection code here
?&gt;</code></pre>
</div>
</div>
<h3>10. JSON Handling</h3>
<p><strong>Exercise</strong>: Create an associative array, encode it to JSON, and then decode it back to a PHP array. Display the values.</p>
<div class="dark bg-gray-950 contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative">
<div class="flex items-center text-token-text-secondary bg-token-main-surface-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9">
<pre class="language-php"><code>&lt;?php
// Your JSON handling code here
?&gt;</code></pre>
</div>
</div>
<h3>11. Error Handling</h3>
<p><strong>Exercise</strong>: Write a script that uses a try-catch block to handle division by zero.</p>
<div class="dark bg-gray-950 contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative">
<div class="flex items-center text-token-text-secondary bg-token-main-surface-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9">
<pre class="language-php"><code>&lt;?php
// Your error handling code here
?&gt;</code></pre>
</div>
</div>
<h3>12. Object-Oriented Programming</h3>
<p><strong>Exercise</strong>: Create a class called <code>Car</code> with properties for <code>make</code>, <code>model</code>, and <code>year</code>. Include a method to display the car's details.</p>
<div class="dark bg-gray-950 contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative">
<div class="flex items-center text-token-text-secondary bg-token-main-surface-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9">
<pre class="language-php"><code>&lt;?php
// Your OOP code here
?&gt;</code></pre>
</div>
</div>
<h3>Conclusion</h3>
<p>These exercises cover various PHP concepts, from basic syntax to more advanced topics like OOP and file handling. Feel free to customize the exercises to suit your learning goals, and don&rsquo;t hesitate to reach out if you need any help or clarification!</p>
</div>
</div>
</div>
</div>
</div>
</div>

Web Technology View More