PHP Syntax
PHP syntax refers to the rules and conventions governing the structure and composition of PHP code. As a server-side scripting language, PHP code is embedded within HTML documents and processed by the server before being sent to the client's web browser. Key aspects of PHP syntax include:
1. Tags: PHP code is enclosed within <?php ?> tags to differentiate it from HTML markup. Short tags <?= ?> can also be used for echoing output.
2. Statements: PHP code consists of statements, each ending with a semicolon (;). Statements can be simple or compound, and control structures such as if, else, while, for, foreach, switch, and try/catch are used for flow control.
3. Variables: PHP variables are denoted by a dollar sign ($) followed by the variable name. Variables are case-sensitive and dynamically typed, meaning they do not require explicit declaration of data types.
4. Operators: PHP supports various operators, including arithmetic (+, -, *, /), assignment (
, comparison (==, ===, !=, !==, <, >, ⇐, >, logical (&&, ]] | php_syntax | [[, !), and string concatenation (.) operators.
5. Functions: PHP provides a wide range of built-in functions for performing tasks such as string manipulation, array processing, date/time handling, and database interaction. Custom functions can also be defined using the function keyword.
6. Comments: PHP supports single-line comments (//) and multi-line comments (/* */) for documenting code and providing explanations.
Understanding PHP syntax is essential for writing clear, concise, and maintainable code, enabling developers to create dynamic web applications efficiently. s://www.php.net/manual/en/language.basic-syntax.php