Type Hinting
Explore type hinting in PHP to specify expected data types such as arrays, objects, and scalar types for function parameters. Understand how this technique enhances code organization and debugging by enforcing correct argument types and producing clear error messages. Learn its application across PHP versions, including PHP 5 and PHP 7.
We'll cover the following...
We'll cover the following...
What is type hinting?
Type hinting is used to specify the expected data type (arrays, objects, interfaces, and so on) for an argument in a function declaration. It is especially useful because it results in better code organization and improved error messages.
Type hinting for arrays
When we want a function to only get arrays as valid arguments, we can put the keyword array in front of the argument name. Let’s look at the syntax for ...