Basics
PHP Booleans
PHP Boolean Values
PHP booleans use logical operators, with truthy/falsy evaluations.
Introduction to PHP Booleans
In PHP, a boolean is a data type that represents two possible states: true or false. Booleans are primarily used in conditional testing to control the flow of a program.
Creating Booleans in PHP
Booleans in PHP can be created by assigning true or false to variables. These keywords are case-insensitive, meaning you can use TRUE or FALSE as well.
Logical Operators with Booleans
PHP supports several logical operators that work with boolean values, such as AND, OR, and NOT. These operators allow you to perform logical operations on boolean expressions.
Truthy and Falsy Values
In PHP, certain values are considered truthy or falsy when evaluated in a boolean context. A truthy value is considered true, while a falsy value is considered false. Examples of falsy values include:
false0(integer zero)0.0(floating-point zero)""(an empty string)null[](an empty array)
Using Booleans in Conditional Statements
Booleans are often used in conditional statements to control the program flow based on certain conditions. The most common conditional statements in PHP are if, else, and elseif.
Conclusion
Understanding how booleans work in PHP is essential for controlling program logic and making decisions based on conditions. By mastering booleans and logical operators, you can write more efficient and effective PHP code.
Basics
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