(PHP 5 >= 5.3.0, PHP 7)
stream_supports_lock — Tells whether the stream supports locking
$stream
) : boolTells whether the stream supports locking through flock().
streamThe stream to check.
锟缴癸拷时锟斤拷锟斤拷 TRUE锟斤拷 锟斤拷锟斤拷锟斤拷失锟斤拷时锟斤拷锟斤拷 FALSE锟斤拷