Web Development Articles
PHP Match Expression (match)
PHP Match Expression (match)
The PHP match expression is a powerful feature introduced in PHP 8.0 that provides a more concise and flexible alternative to switch statements.
Basic Match Syntax
$result = match ($value) {
pattern1 => expression1,
pattern2 => expression2,
// ...
default => default_expression,
};
Comparison switch vs match
// switch statement
switch ($statusCode) {
case 200:
$message = 'OK';
break;
case 404:
$message = 'Not Found';
break;
case 500:
$message = 'Server Error';
break;
default:
$message = 'Unknown';
}
// match equivalent
$message = match ($statusCode) {
200 => 'OK',
404 => 'Not Found',
500 => 'Server Error',
default => 'Unknown',
};
Various Usage Examples:
// multiple conditions
$result = match ($httpCode) {
200, 201, 202 => 'Success',
400, 401, 403 => 'Client Error',
500, 501, 502 => 'Server Error',
default => 'Unknown',
};
// Match uses strict comparison (===)
$result = match ($value) {
0 => 'Integer zero',
'0' => 'String zero',
false => 'Boolean false',
default => 'Other',
};
// Complex Expressions
$age = 25;
$category = match (true) {
$age < 13 => 'Child',
$age < 20 => 'Teenager',
$age < 65 => 'Adult',
default => 'Senior',
};
// returning different types
function processValue($value) {
return match ($value) {
'int' => 42,
'string' => 'Hello World',
'array' => [1, 2, 3],
'bool' => true,
default => null,
};
}
// Using with arrays
$user = [
'role' => 'admin',
'status' => 'active'
];
$permissions = match ($user['role']) {
'admin' => ['read', 'write', 'delete'],
'editor' => ['read', 'write'],
'viewer' => ['read'],
default => [],
};
// nested match expressions
$result = match ($type) {
'number' => match ($value) {
$value > 0 => 'Positive',
$value < 0 => 'Negative',
default => 'Zero',
},
'string' => 'String type',
default => 'Unknown type',
};
// Conditional Logic in Patterns
$score = 85;
$grade = match (true) {
$score >= 90 => 'A',
$score >= 80 => 'B',
$score >= 70 => 'C',
$score >= 60 => 'D',
default => 'F',
};
Advantages Over Switch
- Returns a value - Can be assigned directly to variables
- No fall-through - Prevents accidental bugs
- Strict comparisons - More predictable behavior
- More concise - Less boilerplate code
- Better error handling - Throws UnhandledMatchError for unhandled cases
Important Notes
- Match expressions must be exhaustive or include a default case
- Throws UnhandledMatchError if no pattern matches and no default is provided
- Each arm must be a single expression (use anonymous functions for complex logic)
- Patterns are evaluated in order, first match wins
The match expression is a significant improvement that makes conditional logic more readable, safer, and more expressive in modern PHP code.
Install and Configure ImageMagick for PHP with brew package manager
This tutorial will show you step-by-step how to use brew package manager to install ImageMagick and then configure it to work with PHP.
First check if ImageMagick already exists. Either command below should do that for you.
brew info imagemagick
If ImageMagick isn't installed you can simply use the command below to install it.
brew install imagemagick
Now we need to setup PHP to use the ImageMagick extension. To do so we can use the pecl package manager.
Check if pkg-config is installed.
brew info pkg-config
If pkg-config isn’t installed run the following command.
Set a few configurations for pecl. Run the following 3 commands.
export PKG_CONFIG_PATH="$(brew --prefix imagemagick)/lib/pkgconfig"
export CPPFLAGS="-I$(brew --prefix imagemagick)/include/ImageMagick-7"
export CFLAGS="-DMAGICKCORE_HDRI_ENABLE=1 -DMAGICKCORE_QUANTUM_DEPTH=16"
Install the pecl imagick extension.
pecl install imagick
Restart PHP with brew.
brew services restart php
Check that gd and imagick extensions are set up properly.
php -m | grep -E "gd|imagick"
And that’s it! You may run into an issue with a non-existing imagick extension. If you have multiple versions of PHP installed and frequently switch between different versions you will need to install the Imagick extension for each PHP version.
Defining a Javascript Function
How To Define a JavaScript Function
There are a few different ways to declare a function in Javascript applications. I’ve laid out 4 ways below so choose the method that best fits your use case! Function declarations are great for named functions, whereas arrow functions are excellent for callbacks and shorter functions.
Using Function Declaration
/** Function Declaration */
function functionName(parameters) {
// code to be executed
return value;
}
// Example
function greet(name) {
return "Hello, " + name + "!";
}
console.log(`My name is ${greet("Alice")}`); // "Hello, Alice!"
Using Function Expression
/** Function Expression */
const functionName = function(parameters) {
// code to be executed
return value;
};
// Example
const multiply = function(a, b) {
return a * b;
};
console.log(`5 * 3 = ${multiply(5, 3)}`); // 15
Using Arrow Functions (ES6)
/** Arrow Function (ES6) */
const functionName = (parameters) => {
// code to be executed
return value;
};
// Examples with different syntax
const square = (x) => {
return x * x;
};
console.log(`Square of 4: ${square(4)}`); // 16
// Implicit return (for single expressions)
const squareRoot = x => x ** 0.5;
console.log(`Square Root of 8: ${squareRoot(8)}`);
// Multiple parameters
const add = (a, b) => a + b;
console.log(`2 + 3 = ${add(2, 3)}`); // 5
// No parameters
const title = () => "Math";
console.log(`The page title is "${pageTitle()}"`);
Using the Function Constructor
/** 4. Function Constructor (less common) */
const functionName = new Function("parameters", "function body");
// Example
const divide = new Function("a", "b", "return a / b;");
console.log(divide(10, 2)); // 5
PHP Access Modifiers (public, private, protected)
In PHP Object-Oriented programming, public, private, and protected are access modifiers (visibility keywords) used to control how properties (variables) and methods (functions) of a class can be accessed.
They are important in Object-Oriented Programming (OOP) because they enforce encapsulation (controlling how data is exposed and used).
Public
Members declared public can be accessed from inside the class, outside of the class and by subclasses (child classes). If no visibility is specified on a property the default will be public.
class Car {
public $brand;
public function setBrand($brand) {
$this->brand = $brand; // accessible inside the class
}
}
$car = new Car();
$car->brand = "Toyota"; // accessible outside the class
echo $car->brand; // Output: Toyota
Private
Members declared private can only be accessed inside of the class that defines them. They cannot be accessed from outside the class or by subclasses.
class Car {
private $engineNumber;
public function setEngineNumber($num) {
$this->engineNumber = $num; // accessible inside the class
}
public function getEngineNumber() {
return $this->engineNumber; // allowed via public method
}
}
$car = new Car();
$car->setEngineNumber("ENG123");
// echo $car->engineNumber; ERROR: Cannot access private property
echo $car->getEngineNumber(); // Output: ENG123
Protected
Members declared protected can be accessed inside of the class, in child(sub) classes that inherit from it. They cannot be accessed directly from outside of the class… only subclasses.
class Vehicle {
protected $type = "Generic Vehicle";
protected function getType() {
return $this->type;
}
}
class Car extends Vehicle {
public function showType() {
return $this->getType(); // accessible in child class
}
}
$car = new Car();
// echo $car->type; ERROR: Cannot access protected property
echo $car->showType(); // Output: Generic Vehicle
Master JavaScript Asynchronous Programming with Promise.allSettled()
The Promise.allSettled() method is a powerful tool for handling multiple promises in JavaScript. It returns a single Promise that resolves with an array of objects, each representing the outcome of a promise in the input array.
Each outcome object contains a status property, which is either 'fulfilled' or 'rejected'.
- If the status is 'fulfilled', the object will also contain a value property with the resolved value.
- If the status is 'rejected', the object will contain a reason property with the error (typically the value passed to reject).
Key Difference: Promise.allSettled() vs. Promise.all()
Unlike Promise.all(), which immediately rejects if any promise in the iterable is rejected, Promise.allSettled() never short-circuits. It waits for all promises to settle (either fulfill or reject), making it ideal for use cases where you need to know the result of every asynchronous operation, regardless of individual failures. This provides a more robust way for error handling in async/await and promise chains.
When to use Promise.allSettled() in JavaScript?
Use it whenever you need to process the results of multiple independent asynchronous operations and you don't want a single failure to prevent you from handling the others. Common scenarios include making multiple API calls or database queries where individual failures are non-critical.
The following example demonstrates how to use Promise.allSettled() to handle a mix of successful and failed promises.
// Example: Handling multiple API calls or asynchronous tasks
const p1 = new Promise((resolve, reject) => {
setTimeout(resolve, 200, "Data for User 1"); // Simulates a successful API call
});
const p2 = new Promise((resolve, reject) => {
setTimeout(resolve, 200, "Data for User 2"); // Simulates another successful call
});
const p3 = new Promise((resolve, reject) => {
setTimeout(reject, 200, "User 3 not found"); // Simulates a failed API call (e.g., 404)
});
const p4 = new Promise((resolve, reject) => {
setTimeout(reject, 200, "Server error for User 4"); // Simulates a server error (e.g., 500)
});
// Execute all promises and handle results with allSettled
Promise.allSettled([p1, p2, p3, p4])
.then(results => {
console.log("All operations settled:");
results.forEach((result, index) => {
if (result.status === 'fulfilled') {
console.log(`Promise ${index + 1}: Success -`, result.value);
} else {
console.log(`Promise ${index + 1}: Failed -`, result.reason);
}
});
});
// ** CONSOLE OUTPUT **
// All operations settled:
// Promise 1: Success - Data for User 1
// Promise 2: Success - Data for User 2
// Promise 3: Failed - User 3 not found
// Promise 4: Failed - Server error for User 4
Laravel Webpack.mix Asset Compilation AND Performance Optimization
Getting Started with webpack.mix
This is an essential must know for Laravel developers. This tutorial will go through the basics of webpack.mix and preparing live CSS stylesheets and Javascript includes.
Locate webpack.mix.js and the /resources and /public directories. I will define a few ways to specify the files from resources compiled to the live public directory. Check out these 2 examples… they should cover necessary usage for 99% of projects.
Example: Combine multiple files into a single file.
In this example I’ll define a simple way to combine multiple custom javascript files into a single file. Let’s take 4 custom stylesheets and 4 javascript files. We will combine all specified stylesheets from /resources/css into a single stylesheet named /public/css/custom-all.css. Also let’s combine the specified javascript files from /resources/js into a single javascript file named /public/js/custom-all.js
All files that can be edited directly are located in the resources directory. All compiled files will be placed in the public directory where the code can be accessed live.
mix.js('resources/js/app.js', 'public/js')
.vue()
.sass('resources/sass/app.scss', 'public/css');
// Combine all custom JS into one file
mix.scripts([
'resources/js/custom/main.js',
'resources/js/custom/helpers.js',
'resources/js/custom/components/*.js'
], 'public/js/custom-all.js');
// Combine all custom CSS into one file
mix.styles([
'resources/css/custom/main.css',
'resources/css/custom/components/buttons.css',
'resources/css/custom/pages/*.css'
], 'public/css/custom-all.css');
Let’s see how to use things in a blade template:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Your Laravel Application</title>
<!-- Compiled CSS -->
<link href="{{ mix('css/app.css') }}" rel="stylesheet">
<link href="{{ mix('css/custom-all.css') }}" rel="stylesheet">
</head>
<body>
<div id="app">
<!-- Your application content -->
</div>
<!-- Compiled JavaScript -->
<script src="{{ mix('js/app.js') }}"></script>
<script src="{{ mix('js/custom-all.js') }}"></script>
</body>
</html>
Example: Prepare several files.
This example is very similar to the example above. The only difference is in this example we are generating individual files in the public directory for each file specified from the resources directory.
// Webpack-compiled JS and CSS
mix.js('resources/js/app.js', 'public/js')
.vue({ version: 2 })
.sass('resources/sass/app.scss', 'public/css') // Or .css() if not using Sass
.css('resources/css/app.css', 'public/css');
// Custom JS files (separate from Webpack bundle)
mix.js('resources/js/custom/main.js', 'public/js/custom.js')
.js('resources/js/custom/helpers.js', 'public/js/helpers.js');
// Custom CSS files (separate from Webpack bundle)
mix.css('resources/css/custom/main.css', 'public/css/custom.css')
.css('resources/css/custom/components/buttons.css', 'public/css/components/buttons.css');
Notice in webpack.mix.js the definitions for mix.js and mix.css methods. Each of the javascript files and stylesheets from the resources directory has a corresponding file in the public directory.
Now let’s look at how to use this in a blade template:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Your Laravel Application</title>
<!-- Compiled CSS -->
<link href="{{ mix('css/app.css') }}" rel="stylesheet">
<link href="{{ mix('css/custom.css') }}" rel="stylesheet">
<link href="{{ mix('css/components/buttons.css') }}" rel="stylesheet">
</head>
<body>
<div id="app">
<!-- Your application content -->
</div>
<!-- Compiled JavaScript -->
<script src="{{ mix('js/app.js') }}"></script>
<script src="{{ mix('js/custom.js') }}"></script>
<script src="{{ mix('js/helpers.js') }}"></script>
</body>
</html>
To generate the public CSS and JS files:
npm install
npm run dev
PHP Spaceship Operator (<=>)
PHP Spaceship Operator (<=>)
The PHP Spaceship Operator (<=>) is a comparison operator that provides a three-way comparison between two values. It's also known as the "combined comparison operator."
How it works:
The operator returns -1, 0, or 1 depending on the condition.
-1 => if the left operand is less than the right operand
0 => if both operands are equal
1 => if the left operand is greater than the right operand
Sample Usage:
$a = 1;
$b = 1;
$result = $a <=> $b; // result is 0
$b = 2;
$result = $a <=> $b; // result is -1
$b = 0;
$result = $a <=> $b; // $result is 1
Spaceship Operator vs using if-else:
// using if/else
if ($a < $b) {
return -1;
} elseif ($a > $b) {
return 1;
} else {
return 0;
}
// using spaceship operator
return $a <=> $b;
Benefits:
- Concise: Replaces complex if-else chains
- Readable: Clear intention for comparison
- Consistent: Always returns -1, 0, or 1
- Type-safe: Handles different data types predictably