Snippets tagged “array-key-exists”
3 snippets use this tag.
- Best way to test for a variable's existence in PHP; isset() is clearly brokenPHP
In PHP, the isset() function is used to check if a variable has been set, meaning that it has been declared and is not equal to NULL.
- How to Deal With Undefined Offset Error in PHPPHP
Here is a snippet that will help you to deal with a common PHP undefined offset error. Here, you will find three methods that help to avoid such an error.
- PHP check if url parameter existsPHP
To check if a URL parameter exists in PHP, you can use the isset function.