> php_troubleshooting
php
PHP fatal errors, warnings, and common runtime exceptions.
5 errors·category: language·updated june 2026
#codeproblemseveritypopularity
- 01Undefined indexWarning: Undefined index / array keyworkaround88
- 02Call to undefined functionFatal error: Call to undefined functioncritical86
- 03Class not foundFatal error: Class not found / not found in ...critical85
- 04Maximum execution time exceededFatal error: Maximum execution time of N seconds exceededcritical82
- 05DivisionByZeroErrorDivisionByZeroError: division by zerocritical80
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- · Cross-referenced with the official php docs and GitHub issues.
- · Fixes verified against top-voted Stack Overflow answers and high-reaction GitHub comments.
- · Reviewed and refreshed as new php versions ship and reader corrections come in.
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