PHP Works on Localhost but Fails on cPanel Shared Hosting – Silent Production Issues Explained
Bahut saare PHP developers ye issue face karte hain: script localhost par perfectly chalti hai, lekin jaise hi cPanel shared hosting par upload karte ho, ya to blank page milta hai ya kuch bhi output nahi aata.
Ye problem code ka nahi hoti. 90% cases me issue shared hosting ke strict environment ki wajah se hota hai, jahan PHP execution, permissions aur server limits bilkul alag hoti hain.
Localhost vs cPanel Shared Hosting – Basic Difference
Localhost par PHP developer-friendly environment me run hoti hai, jabki cPanel shared hosting security-focused environment hota hai. Isi wajah se php works locally but not on cpanel jaise issues create hote hain.
| Localhost | Loose permissions, full access |
| Shared Hosting | Restricted permissions, limited PHP functions |
| Error Display | Mostly disabled for security |
Silent Issue #1: Disabled PHP Functions
Shared hosting me kai PHP functions security reasons se disable hote hain. Agar tumhari script exec, shell_exec ya system use kar rahi hai, to script silently fail ho sakti hai.
echo ini_get('disable_functions');
Ye issue aksar php script not working on cpanel shared hosting searches ka main reason hota hai.
Silent Issue #2: open_basedir Restriction
cPanel shared hosting me PHP ko sirf specific directories tak access hota hai. Agar script kisi bahar ke path ko access karne ki koshish karti hai, to execution fail ho jata hai.
echo ini_get('open_basedir');
Ye issue zyada tar php script runs locally but not on shared hosting type queries me dikhta hai.
Silent Issue #3: File & Folder Permissions
Localhost par permissions ka zyada effect nahi hota, lekin shared hosting me wrong permissions ki wajah se PHP script execution block ho jata hai.
Recommended permissions:
- Folders: 755
- Files: 644
Silent Issue #4: PHP Version & Extensions
Kai baar localhost par PHP version newer hota hai, jabki cPanel shared hosting par old version active hota hai. Missing extensions ki wajah se bhi script fail ho sakti hai.
cPanel → MultiPHP Manager se PHP version aur extensions verify karo.
How to Debug PHP Script on cPanel Shared Hosting
Shared hosting me error directly browser par nahi dikhte. Debugging ke liye ye steps follow karo:
- PHP error reporting temporarily enable karo
- cPanel File Manager me error_log file check karo
- Script output ko manually log file me likho
Production Checklist (Quick Fix)
- Disabled PHP functions check karo
- open_basedir restriction verify karo
- Correct file permissions set karo
- PHP version & extensions match karo
- Error logging enable karo
Final Verdict
Agar PHP script localhost par chal rahi hai par cPanel shared hosting par fail ho rahi hai, to problem code nahi, balki server environment hota hai. Ye issues samajh loge to future production bugs easily avoid ho jaate hain.
Shared hosting forgiving nahi hota — isliye debugging smart honi chahiye.
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