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session_create_id

Description

The session_create_id of Session for PHP creates a new session id.

Syntax

session_create_id(
    string $prefix = ""
): string|false

Parameters

prefix

If prefix is specified, new session id is prefixed by prefix. Not all characters are allowed within the session id. Characters in the range [a-zA-Z0-9,-] are allowed. Maximum length is 256 characters.

Return

Returns a new collision free session id for the current session. If it is used without active session, it omits collision check. On failure, false is returned.

Examples

1 · void

<?

$return = session_create_id();

echo $return;

0dc14b05ab33c5c63c76302b9d9abdf2

2 · prefix

<?

$prefix = "myprefix";

$return = session_create_id($prefix);

echo $return;

myprefixa863323829c7c936baa1ef0b2248c0b2