PHP IPC函數介紹—共用記憶體

以下是php的共用記憶體常用函數，用於進程間的通訊

shm_attach — Creates or open a shared memory segment
shm_detach — Disconnects from shared memory segment
shm_get_var — Returns a variable from shared memory
shm_has_var — Check whether a specific entry exists
shm_put_var — Inserts or updates a variable in shared memory
shm_remove_var — Removes a variable from shared memory
shm_remove — Removes shared memory from Unix systems

$msg_key=1;$ipc_key=ftok(__FILE__,'t');$seg=shm_attach($ipc_key,1024,0600); //建立或開啟一個共用記憶體段if(!$seg){     die('create or open shared memory segment failed!');}shm_put_var($seg,$msg_key,'hello world');if(shm_has_var($seg,$msg_key)){   $content=shm_get_var($seg,$msg_key);   echo $content;}shm_remove_var($seg,$msg_key);shm_remove($seg);              

輸出：hello world