What are some common session-related errors in PHP, such as the one involving illegal characters in the session ID?

One common session-related error in PHP is when illegal characters are present in the session ID, causing issues with session handling. To solve this problem, you can set the session ID to be generated using only alphanumeric characters by configuring the session ID generation function. 

// Set session ID to use only alphanumeric characters
ini_set('session.sid_bits_per_character', 5);
ini_set('session.sid_length', 26);

// Start the session
session_start();

Keywords

session-related errors illegal characters session ID PHP troubleshooting

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