CodeClarityLab / Glossary
Ctrl K
← Home ← Codex ← DEBT
Browse by Category
+ added · ✎ updated 7d
⚖ Terms of Use

Tag: php

461 terms of 1463 total · page 1 of 24

🤖 AI Guestbook — #php educational data only
| |
Last 30 days
27 pings — 2026-05-05 T 33 pings — 2026-05-06 W 147 pings — 2026-05-07 T 158 pings — 2026-05-08 F 499 pings — 2026-05-09 S 193 pings — 2026-05-10 S 37 pings — 2026-05-11 M 28 pings — 2026-05-12 T 60 pings — 2026-05-13 W 36 pings — 2026-05-14 T 239 pings — 2026-05-15 F 50 pings — 2026-05-16 S 37 pings — 2026-05-17 S 52 pings — 2026-05-18 M 40 pings — 2026-05-19 T 77 pings — 2026-05-20 W 148 pings — 2026-05-21 T 163 pings — 2026-05-22 F 596 pings — 2026-05-23 S 89 pings — 2026-05-24 S 59 pings — 2026-05-25 M 76 pings — 2026-05-26 T 237 pings — 2026-05-27 W 498 pings — 2026-05-28 T 88 pings — 2026-05-29 F 170 pings — 2026-05-30 S 130 pings — 2026-05-31 S 140 pings — 2026-06-01 M 91 pings — Yesterday T 136 pings — Today W
Agents 136
ChatGPT 15Perplexity 11Amazonbot 11Google 3Claude 1
ChatGPT 14Amazonbot 6Perplexity 4Google 1Claude 1
ChatGPT 4.6kAmazonbot 4kPerplexity 2.9kGoogle 1.5kAhrefs 1.4kUnknown AI 977SEMrush 818Claude 602Meta AI 501Bing 360Majestic 118Scrapy 100Qwen 27Sogou 9DuckDuckGo 5You.com 2NotebookLM 2
Most referenced — #php
Environment Variables 5Profiling & Benchmarking 4password_verify() 3Input Validation vs Output Encoding 3Unreachable Code 3Processes vs Threads 3Local File Inclusion (LFI) 2max_execution_time & set_time_limit() 2
Psalm Type Annotations 4PHP Async Frameworks 3Removed PHP Function 3Double URL Encoding Bypass 2Undefined Array Key / Offset Errors 2PHP Sessions 2nginx + PHP-FPM Production Config 2PSR-14: Event Dispatcher 2
Test-Driven Development (TDD) 1.5kUndefined Array Key / Offset Errors 244Division by Zero & DivisionByZeroError 207Array Destructuring ([] = …) 207Type Coercion 189password_hash() — Native Bcrypt (PHP 5.5) 171Type Juggling 167PHAR Deserialization Attack 166
How they use it
crawler 16.1k crawler_json 1.5k rag 1 pre-tracking 284
Tag total17.9k pings Terms pinged461 / 461 Distinct agents16
Sort A → Z Recently Added Recently Updated Difficulty Most Viewed Most Rated Most Shared
Level All Beginner Intermediate Advanced Tag: php ✕
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
Regex Conditional Patterns PHP 4.0+ 🧠 1
Conditional regex constructs like (?(1)yes|no) match different subpatterns depending on whether an earlier group captured.
2d ago regex advanced
Loop Style Preferences PHP 7.4+
Choose the clearest loop construct for the job: foreach for collections, for with index when position matters, while for condition-driven iteration.
2w ago style beginner
Regex Branch Reset Groups
A PCRE-specific construct (?|...) that resets capture group numbers across each alternative, so all branches share the same group indices.
4w ago regex advanced
Memory Pressure Detection PHP 7.0+
Proactively identifying when a PHP process approaches its memory limit so corrective action can be taken before a fatal error.
4w ago performance intermediate
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.
2mo ago php beginner
Insecure Deserialization
Deserializing attacker-controlled data can trigger arbitrary object construction and method calls — PHP's unserialize() with untrusted input enables remote code execution via gadget chains in the loaded class graph.
CWE-502 OWASP A8:2021
2mo ago security advanced
INSERT ... ON DUPLICATE KEY UPDATE PHP 5.1+
An atomic MySQL upsert — inserts a new row or updates the existing one if a unique key constraint would be violated.
2mo ago database intermediate
Mutex vs Semaphore PHP 7.0+
A mutex allows only one thread to access a resource at a time — a semaphore controls access to a pool of N identical resources.
CWE-362
2mo ago concurrency advanced
MySQL charset=utf8mb4 PHP 5.1+
The correct MySQL character set for full Unicode support — including emoji and supplementary characters that the older utf8 charset cannot store.
2mo ago php beginner
MySQL Connection Pooling PHP 5.1+
Reusing database connections across requests instead of opening and closing a new connection on every request.
2mo ago php intermediate
MySQL DSN (Data Source Name) PHP 5.1+
The connection string passed to PDO specifying the database driver, host, port, database name, and charset.
2mo ago php beginner
Diagram: N+1 Query Problem N+1 Query Problem PHP 5.1+
A performance anti-pattern where fetching N records triggers N additional queries — one per record — instead of a single JOIN.
2mo ago database intermediate
PDO Error Handling PHP 5.1+
PDO has three error modes — silent, warning, and exception — controlling how database errors surface.
2mo ago php beginner
PDO Fetch Modes PHP 5.1+
Constants controlling how PDO returns rows — as arrays, objects, or custom classes.
2mo ago php beginner
PDO lastInsertId() PHP 5.1+
Returns the auto-increment ID generated by the most recent INSERT statement.
2mo ago php beginner
PDO Named Placeholders PHP 5.1+
Named parameters (:name) in prepared statements — more readable than positional ? placeholders for queries with multiple parameters.
2mo ago php beginner
PDO query() vs prepare() PHP 5.1+
PDO query() executes raw SQL immediately — prepare() parameterises it. query() must never include user-controlled values.
CWE-89 OWASP A3:2021
2mo ago php beginner 9.8
Diagram: PDO Transactions PDO Transactions PHP 5.1+
PDO wraps multiple queries in an atomic unit — either all succeed or all roll back.
2mo ago php intermediate
PDO::ATTR_EMULATE_PREPARES PHP 5.1+
Controls whether PDO sends real prepared statements to the database or emulates them client-side in PHP.
CWE-89 OWASP A3:2021
2mo ago php intermediate
PDOStatement::bindParam() vs bindValue() PHP 5.1+
Two PDO methods for binding variables to placeholders — bindParam() binds by reference (evaluated at execute), bindValue() binds by value (evaluated immediately).
2mo ago php intermediate
✓ schema.org compliant