SyncSharedMemory::first
(PECL sync >= 1.1.0)
SyncSharedMemory::first — Check to see if the object is the first instance system-wide of named shared memory
Description
public bool SyncSharedMemory::first ( void )Retrieves the system-wide first instance status of a SyncSharedMemory object.
Parameters
This function has no parameters.
Return Values
A boolean of TRUE if the object is the first instance system-wide, FALSE otherwise.
Examples
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)See Also
- SyncSharedMemory::write() - Copy data to named shared memory
- SyncSharedMemory::read() - Copy data from named shared memory
← SyncSharedMemory::__construct
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