Detect a CSV Delimiter Automatically in PHP
Guess a CSV delimiter from multiple sampled records in PHP using consistent parsed column counts, while detecting ambiguous or malformed files.
Split Large CSV Files in PHP
Split a large CSV into smaller valid CSV files in PHP while preserving the header, quoted fields, encoding, and bounded memory usage.
Stream Large JSON Files in PHP
Process large newline-delimited JSON files in PHP one record at a time, with bounded memory, line-level errors, and safe batch writes.
Multi-Tenant File Storage Design
Choose shared or dedicated SaaS file storage, design tenant-scoped object keys, issue limited upload URLs, and enforce lifecycle and deletion rules.
Tenant-Specific Feature Flags in SaaS
Implement SaaS feature flags with global defaults, tenant overrides, deterministic evaluation, caching, audit history, and safe cleanup.
Tenant-Aware Caching Without Data Leaks
Design multi-tenant cache keys, invalidation, authorization boundaries, and per-tenant limits so cached data cannot leak between SaaS customers.
Soft Delete Strategy for Multi-Tenant SaaS
Design tenant-scoped soft deletes with deleted timestamps, filtered queries, uniqueness rules, restoration, retention, and permanent purge jobs.
Download Generated Text as a File with JavaScript
Create a client-side text or CSV download with Blob, an object URL, the download attribute, UTF-8 handling, and timely URL cleanup.
Resize an Image Before Upload with JavaScript
Resize a selected browser image with createImageBitmap and canvas, preserve aspect ratio, export a Blob, and upload the smaller file.
Prevent Duplicate Form Submission in JavaScript
Disable a form’s submit controls after a valid submission, show progress, handle failed asynchronous requests, and still enforce idempotency on the server.