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(PHP 5 >= 5.3.0, PHP 7)

shm_has_varCheck whether a specific entry exists


bool shm_has_var ( resource $shm_identifier , int $variable_key )

Checks whether a specific key exists inside a shared memory segment.

Elenco dei parametri


Shared memory segment, obtained from shm_attach().


The variable key.

Valori restituiti

Returns TRUE if the entry exists, otherwise FALSE

Vedere anche:

  • shm_get_var() - Restituisce una variabile dalla memoria condivisa
  • shm_put_var() - Inserisce o aggiorna una variabile nella memoria condivisa

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