Check to see if the object is the first instance system-wide of named shared memory | ||
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(PECL sync >= 1.1.0)
SyncSharedMemory::first — Check to see if the object is the first instance system-wide of named shared memory
Retrieves the system-wide first instance status of a SyncSharedMemory object.
This function has no parameters.
Returns true
on success or false
on failure.
Example #1 SyncSharedMemory::first() example
<?php$mem = new SyncSharedMemory("AppReportName", 1024);if ($mem->first()){ // Do first time initialization work here.}var_dump($mem->first());$mem2 = new SyncSharedMemory("AppReportName", 1024);var_dump($mem2->first());?>
The above example will output something similar to:
bool(true) bool(false)