Php terms
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.
Opaque Objects & GdImage/CURLHandle PHP 8.0+
PHP 8.0 replaced resource types (gd, curl, xml) with opaque objects — GdImage, CurlHandle, XMLParser — improving type safety and OOP integration.
2mo ago
php intermediate
OPcache Internals — How Bytecode Caching Works PHP 5.5+
OPcache compiles PHP source files to bytecode once and stores the result in shared memory — subsequent requests skip parsing and compilation entirely, making PHP 5–10x faster for I/O-bound workloads.
2mo ago
php intermediate
OPcache Preloading (PHP 7.4) PHP 7.4+
OPcache preloading (PHP 7.4) compiles PHP files into shared memory at server start — eliminating per-request compilation of framework core files for significant performance gains.
2mo ago
php advanced
Out of Memory Errors (memory_limit) PHP 5.0+
PHP enforces memory_limit in php.ini — exceeding it triggers a fatal E_ERROR that cannot be caught with set_error_handler().
2mo ago
php intermediate
OPcache Tuning PHP 5.5+ OPcache stores compiled PHP bytecode in shared memory, eliminating recompilation on every request — proper tuning is the single highest-impact PHP performance configuration.
2mo ago
php intermediate
openssl_encrypt() PHP 7.1+
PHP's OpenSSL wrapper for symmetric encryption — use AES-256-GCM for authenticated encryption.
2mo ago
php advanced
Output Buffering (ob_start / ob_flush) PHP 4.0+
Capturing PHP output into a buffer rather than sending it immediately, enabling manipulation before delivery or header modification.
2mo ago
php intermediate
OPcache PHP 5.5+
A PHP extension that caches precompiled bytecode in shared memory, eliminating repeated parsing and compilation overhead.
2mo ago
php intermediate