Php terms

5 terms of 1444 total

🐘 The engine behind the web's most-used server-side language

PHP powers an enormous portion of the web — from WordPress and Laravel to custom e-commerce platforms. This category covers the language internals, core functions, OOP features, type system, performance patterns, and PHP-specific quirks that every serious PHP developer should understand deeply. Whether you are writing procedural scripts or building full-stack applications with modern PHP 8.x features, these terms form the foundation.

Sort A → Z Recently Added Recently Updated Difficulty Most Viewed Most Rated Most Shared

Level All Beginner Intermediate Advanced

✕ Clear A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

HTTP Cookies in PHP PHP 7.3+

Cookies are small key-value pairs sent by the server via Set-Cookie and echoed back by the browser on every request — PHP sets them with setcookie() before any output, with Secure, HttpOnly, and SameSite flags controlling safety.

4w ago php beginner

Headers Already Sent Error PHP 5.0+

PHP sends HTTP headers on first output — any echo, whitespace, or BOM before header() causes 'Cannot modify header information — headers already sent'.

2mo ago php beginner

hash_equals() PHP 5.6+

Constant-time string comparison that prevents timing attacks when validating tokens and CSRF values.

2mo ago php intermediate

Heredoc / Nowdoc PHP 5.0+

Heredoc (<<<EOT) and Nowdoc (<<<'EOT') provide multi-line string syntax; Nowdoc is the single-quoted equivalent with no variable interpolation.

2mo ago php beginner

htmlspecialchars() PHP 5.0+

Converts HTML special characters to entities — the primary defence against XSS in HTML output contexts.

2mo ago php beginner