The previous article explained how the isset() language construct is used to check that a variable is defined and has a value before using it. The empty() language construct is another option that can be used to check if a variable has a value that can be used. empty() is used to check if a …
When programming, it can be important to check if a variable has been declared in memory and if it has a value before using the variable. This may seem unnecessary because a developer can just declare a variable and assign it a value before using the variable. However, as developers we often need to use …
In PHP, there are two options when comparing values in a condition. These comparison options are loose comparison (==) and strict comparison (===). PHP is a loosely typed language which means that variables can be assigned different data types during execution of the application and different data types can be compared in a conditional. This …
PHP – Loose Comparison (==) VS Strict Comparision (===) Read More »