PHP try…catch…finally Summary: in this tutorial, you’ll learn how to use the PHP try…catch…finally statement to handle exceptions and clean up the resources. Introduction to the PHP try…catch…finally statement The try…catch statement allows you to handle exceptions. When an exception occurs in the try block, the execution jumps to the catch block. In the catch…
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PHP try…catch Summary: in this tutorial, you will learn how to use the PHP try…catch statement to handle exceptions. Introduction to the PHP try…catch statement In programming, unexpected errors are called exceptions. Exceptions can be attempting to read a file that doesn’t exist or connecting to the database server that is currently down. Instead of…
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PHP Composer Autoload Summary: in this tutorial, you’ll learn how to use Composer to autoload PHP classes from files using PSR-4 standard. Loading classes using the require_once construct First, create the following directory structure with files: . ├── app │ ├── bootstrap.php │ └── models │ └── User.php └── index.php Code language: PHP (php) The…
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PHP Autoloading Class Files Summary: in this tutorial, you will learn how to organize your class files and load them automatically using PHP spl_autoload_register() function. It is good practice to keep each PHP class in a separate file. Also, the name of the class should be the same as the file name. For example, the…
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PHP Namespace Summary: in this tutorial, you’ll learn about PHP namespaces, how to define classes that belong to a namespace, and how to use namespaces. Why namespaces When your project grows in complexity, you’ll need to integrate the code from others. Sooner or later, you’ll find that your code has different classes with the same…
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PHP Compare Objects Summary: in this tutorial, you will learn how to compare objects in PHP using the comparison operator ( ==) and identity operator (===). To compare objects in PHP, you can use either the comparison operator (==) or identity operator (===). However, each operator behaves differently based on two main criteria: Objects are…
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PHP Clone Object Summary: in this tutorial, you will learn how to clone an object using the clone keyword in PHP. To clone an object is to create a copy of an object. The clone keyword allows you to perform a shallow copy of an object. By combining the clone keyword and __clone() magic method,…
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PHP unserialize Summary: in this tutorial, you’ll learn how to use the PHP unserialize() function to convert a serialized string into an object. Introduction to the PHP unserialize() function The unserialize() function converts a serialized string into an object. Here’s the syntax of the unserialized() function: unserialize(string $data, array $options = []): mixed Code language:…
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PHP serialize Summary: in this tutorial, you’ll learn how to the PHP serialize() function to serialize an object. Introduction to the PHP serialize() function To serialize an object into a string, you use the serialize() function: serialize(mixed $value): string Code language: PHP (php) The serialize() function returns a string that contains a byte-stream representation of…
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PHP __invoke Summary: in this tutorial, you’ll learn about the PHP __invoke() magic method and how to use it effectively. Introduction to the PHP __invoke() magic method Suppose that you have a class called MyClass: class MyClass { // … } Code language: PHP (php) Typically, you create a new instance of the MyClass and…
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