Fix Apache HTTPS VirtualHost ServerName Mismatches
Diagnose an Apache HTTPS request that reaches the wrong virtual host by checking address and port matching, ServerName, DNS, SNI, and loaded configuration.
Detect PHP Socket Timeouts While Copying a Stream
Set a read timeout on a PHP socket, copy its data to a destination stream, and inspect stream metadata so partial data is never mistaken for EOF.
Build URLs Safely with URL and URLSearchParams
Build JavaScript URLs with URL and URLSearchParams, use encodeURIComponent for individual path segments, and avoid encoding an assembled URL incorrectly.
Prevent Duplicate API Operations After a Timeout
Make long-running POST operations safe to retry with a client-generated idempotency key, an atomic operation record, and a status endpoint.
Import Spreadsheet Data into Normalized SQL Server Tables
Load spreadsheet rows into a SQL Server staging table, validate them, and use one explicit transaction to populate parent and child tables safely.
Get the Latest MySQL Value Before Two Dates
Find each person’s last recorded value on or before two cutoff dates with one grouped pass and indexed joins back to the matching MySQL rows.
Verify SQL Server Backups with CHECKSUM and VERIFYONLY
Use BACKUP WITH CHECKSUM and RESTORE VERIFYONLY to detect media problems, then perform test restores and DBCC CHECKDB for stronger recovery assurance.
Log Guzzle Requests and Responses Safely in PHP
Add Guzzle middleware that records HTTP method, path, status, duration, and failures without rebuilding requests or leaking headers and bodies.
Build Accessible Tabs with JavaScript
Create a tab interface that updates panels reliably and supports the ARIA roles, selected state, roving tabindex, and arrow-key behavior users expect.
Count Duplicate Values in a JavaScript Array
Count repeated values with a JavaScript Map, keep the result reusable, and convert it to a plain object only when an API or JSON output requires one.