A Modified File Is Evidence, Not a Verdict: Practical File Integrity for PHP Applications
Hash mismatches are precise about bytes and deliberately silent about intent. That is exactly why they are useful.
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ROOT
Technical field notes published on PRBLEM.
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The Production Readiness Checklist Every PHP Project Should Have
A deployment is not finished when the files upload successfully. Production readiness is a set of explicit checks that make hidden assumptions visible.
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PHP Upload Limits Are More Complicated Than upload_max_filesize
The number shown in php.ini may not be the number a user can successfully upload. The effective limit is the smallest relevant boundary in the whole…
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HTTP 301 Is Not Always Good: The Hidden Cost of Redirect Chains
A redirect can be correct in isolation and still be part of a bad route. Trace the whole chain, not one response.
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Why WordPress Plugin Uninstallers Leave Data Behind
Uninstalling a plugin and deleting every trace of its data are not the same operation—and sometimes that is intentional.
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Stop ‘Repairing’ Databases You Haven’t Diagnosed
Database maintenance commands are changes, not diagnoses. The first job is to identify what is actually unusual.
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XenForo Cron Jobs Explained: How Scheduled Work Fails, Drifts and Recovers
A scheduled entry can exist, be enabled and still fail to produce the outcome you expect. Diagnose progress, ownership and timing separately.
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WP-Cron Is Not a Real Cron Job — And That Matters More Than You Think
WP-Cron is a scheduling mechanism, but its default execution model is request-driven. That difference explains many mysterious delayed tasks.
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SHA-256 Isn’t Just for Security: How to Verify the File You Actually Shipped
A checksum is a small piece of release infrastructure that can answer one very important question with byte-level precision.
6 min read
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Your Site Returns 200 OK. That Doesn’t Mean It’s OK.
A healthy HTTP response proves that one request completed. It does not prove that the application around it is healthy.
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