Fixing session_start(): Permission Denied (13) in XAMPP – A System Administrator’s Guide

Contents: What Does This Error Mean? Find the PHP Session Directory Ensure the Session Directory Exists Fix Directory Permissions Verify php.ini Configuration Clear Old or Corrupt Session Files Debug with Error Logs Summary of Fixes

Fixing session_start() Permission Denied in XAMPP

What Does This Error Mean?

The error occurs when PHP cannot access the session storage directory (/applications/xampp/xamppfiles/temp/) due to permission issues, incorrect ownership, or configuration errors.

Common Causes:

Incorrect permissions on the session directory (/applications/xampp/xamppfiles/temp/).
Wrong ownership (Apache/Nginx cannot write session files).
Misconfigured php.ini session path.
Session directory missing or corrupt session files.
SELinux or security restrictions preventing access (Linux/macOS).

Find the PHP Session Directory

Check PHP Session Path in XAMPP

Run:

php -i | grep "session.save_path"

Expected output:

session.save_path => /applications/xampp/xamppfiles/temp

If the session path is empty, it means PHP is using the system's default temporary folder (/tmp).

Ensure the Session Directory Exists

If the session directory is missing, create it.

sudo mkdir -p /applications/xampp/xamppfiles/temp

Fix Directory Permissions

Grant Read/Write Permissions to the Web Server

Set correct permissions so Apache/Nginx can write session files:

sudo chmod -R 770 /applications/xampp/xamppfiles/temp

Set Correct Ownership

For Apache (default user daemon on macOS XAMPP):

sudo chown -R daemon:daemon /applications/xampp/xamppfiles/temp

For Linux (Ubuntu/Debian/Arch), if running XAMPP manually:

sudo chown -R www-data:www-data /applications/xampp/xamppfiles/temp

Restart XAMPP and test again:

sudo /Applications/XAMPP/xampp restart

Verify php.ini Configuration

If PHP is using the wrong session path, update php.ini.

Locate php.ini in XAMPP

For macOS:

sudo nano /Applications/XAMPP/xamppfiles/etc/php.ini

For Linux:

sudo nano /opt/lampp/etc/php.ini

Update Session Settings

Find and modify:

session.save_handler = files
session.save_path = "/applications/xampp/xamppfiles/temp"
session.gc_maxlifetime = 3600
session.use_strict_mode = 1
session.cookie_secure = 0

If /applications/xampp/xamppfiles/temp is restricted, use /tmp/php_sessions instead.

Restart XAMPP

sudo /Applications/XAMPP/xampp restart

Clear Old or Corrupt Session Files

Corrupt session files can prevent new ones from being created.

sudo rm -rf /applications/xampp/xamppfiles/temp/*

Try running the session script again.

Debug with Error Logs

If the problem persists, check logs.

Check XAMPP Logs

sudo tail -f /Applications/XAMPP/logs/php_error_log

Check Apache Logs

sudo tail -f /Applications/XAMPP/logs/error_log

Summary of Fixes

Issue	Fix
Session directory missing	`mkdir -p /applications/xampp/xamppfiles/temp`
Incorrect folder permissions	`chmod -R 770 /applications/xampp/xamppfiles/temp`
Wrong ownership	`chown -R daemon:daemon /applications/xampp/xamppfiles/temp`
Misconfigured php.ini	Update `session.save_path`
Corrupt session files	`rm -rf /applications/xampp/xamppfiles/temp/*`

By following these systematic fixes, you can resolve session_start() permission errors in XAMPP and restore PHP session functionality.

Fixing session_start(): Permission Denied (13) in XAMPP – A System Administrator’s Guide

What Does This Error Mean?

Find the PHP Session Directory

Check PHP Session Path in XAMPP

Ensure the Session Directory Exists

Fix Directory Permissions

Grant Read/Write Permissions to the Web Server

Set Correct Ownership

Verify php.ini Configuration

Locate php.ini in XAMPP

Update Session Settings

Restart XAMPP

Clear Old or Corrupt Session Files

Debug with Error Logs

Check XAMPP Logs

Check Apache Logs

Summary of Fixes

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Fixing session_start(): Permission Denied (13) in XAMPP – A System Administrator’s Guide

What Does This Error Mean?

Find the PHP Session Directory

Check PHP Session Path in XAMPP

Ensure the Session Directory Exists

Fix Directory Permissions

Grant Read/Write Permissions to the Web Server

Set Correct Ownership

Verify php.ini Configuration

Locate php.ini in XAMPP

Update Session Settings

Restart XAMPP

Clear Old or Corrupt Session Files

Debug with Error Logs

Check XAMPP Logs

Check Apache Logs

Summary of Fixes

High-Availability Cloud VDS

Hosting

Cloud Solution

For You

VDS

Website Builders

Our services

Client Area

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