What Do These PHP Symbols Mean?

What does this symbol mean in PHP?

This document provides a comprehensive list of frequently asked questions and corresponding Stack Overflow links about various symbols, operators, and syntax elements in PHP. It serves as a reference guide to help developers quickly understand the meaning and usage of these symbols.

PHP Syntax:

• &: Bitwise Operators or References
• =&: References
• &=: Bitwise Operators
• &&: Logical Operators
• %: Arithmetic Operators
• !!: Logical Operators
• @: Error Control Operators
• ?:: Ternary Operator
• ??: Null Coalesce Operator (since PHP 7)
• ?string: Nullable type declaration (since PHP 7.1)
• ?->: NullSafe Operator (since PHP 8.0)
• :: Alternative syntax for control structures, Ternary Operator, Return Type Declaration
• ::: Scope Resolution Operator
• : Namespaces
• ->: Classes And Objects
• =>: Arrays
• ^: Bitwise Operators
• >>: Bitwise Operators
• <<: Bitwise Operators
• <<<: Heredoc or Nowdoc
• =: Assignment Operators
• ==: Comparison Operators
• ===: Comparison Operators
• !==: Comparison Operators
• !=: Comparison Operators
• <>: Comparison Operators
• <=>: Comparison Operators (since PHP 7.0)
• |: Bitwise Operators
• ||: Logical Operators
• ~: Bitwise Operators
• : Arithmetic Operators, Array Operators
• = and -=: Assignment Operators
• and --: Incrementing/Decrementing Operators
• .=: Assignment Operators
• .: String Operators
• ,: Function Arguments, Variable Declarations
• $$: Variable Variables
• ': Execution Operator
• []: Arrays (short syntax since PHP 5.4)
• ..: Double-dot character range
• ...: Argument unpacking (since PHP 5.6)
• '**`: Exponentiation (since PHP 5.6)
• #: One-line shell-style comment
• #[]: Attributes (since PHP 8)

Please refer to the corresponding Stack Overflow links for detailed explanations and examples.

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