php session_id



si id est fourni, il remplacera l'identifiant courant de session. session_id() doit alors être appelé avant session_start(). suivant le gestionnaire de sessions que vous utilisez, tous les caractères ne seront pas acceptés dans cette valeur. par exemple, le gestionnaire de sessions par défaut, basé sur les fichiers, n'accepte que  setting the session id before starting the session lets you manually "resume" a session, so to speak. if you session_start() without setting the id, and the previous session has expired, it will generate a new id and start a brand new session. from the php documentation: if id is specified, it will replace the  make sure the return value of session_start() is true. make sure you are calling session_start() before your script outputs anything to the browser. check that apache has write access to the session path. mine is /tmp.

php session_id

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setting the session id before starting the session lets you manually "resume" a session, so to speak. if you session_start() without setting the id, and the previous session has expired, it will generate a new id and start a brand new session. from the php documentation: if id is specified, it will replace the current session id. php checks if there is already a session id coming from a cookie, posted data, or a query string. if such an id exists then the data is read from the session's state file as namevalue pairs and stored in the $_session variable. if there is no session id, then a long session id is created and the state file. session_start();. session_id. (php , php , php ). session_id — get and/or set the current session id. description. string session_id ([ string $id ] ). session_id() is used to get or set the session id for the current session. the constant sid can also be used to retrieve the current name and session id as a string suitable for adding to urls.

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<?php session_id('hello'); session_start(); ?> the code above will change "session_id". i like to change session_id after reading the session_id is given. the code below doesn't work correctly, but i hope it shows what i want. <?php session_start(); sessionid = session_id(); echo $sessionid;  session_id. (php , php ). session_id — get and/or set the current session id. 说明. string session_id ([ string $id ] ). session_id() is used to get or set the session id for the current session. the constant sid can also be used to retrieve the current name and session id as a string suitable for adding to urls. see also  description. string session_id ( [string id]). session_id() returns the session id for the current session. if id is specified, it will replace the current session id. session_id() needs to be called before session_start() for that purpose. depending on the session handler, not all characters are allowed within the session id. when using the drupal crypt::randombytes() function, the best (most secure and most performing) random source is selected automatically. the performance of both approaches was analyzed in #. according to the results, no performance regression is to be expected when switching to php builtin session id generation.

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