Coding tips
PHP File Upload Validation (MIME, Size and Safe Names)
Validate PHP uploads with UPLOAD_ERR_OK, finfo MIME detection, size limits and random names — and ignore $_FILES type and the original filename.
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Coding tips and build notes by Mahir Faysal, a student web developer in Bangladesh: tested Python, HTML, CSS, JavaScript and PHP tutorials, plus notes from my Next.js and Gemini projects. Sample posts are marked and drafts stay in the admin area.
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