posix_getpid()

(PHP 4, PHP 5, PHP 7)

返回当前进程 id

说明

posix_getpid(void): int

Return the process identifier of the current process.返回当前进程的 id

返回值

返回进程 id 号，是整型（integer）。

范例

posix_getpid()的使用例子

<?php
echo posix_getpid(); //8805
?>

参见

• posix_kill()Send a signal to a process
• POSIX man page GETPID(2)

In order to use posix_getpid on Fedeora 11 and up you have to install php-process
# yum install php-process

You can also try using getmypid() instead.

Since upgrading fedora 10 to 12, I discovered that posix_getpid() disappeared and not compiled in by default, as it specifies here.
It turns out that it had been moved into package php-process.
Just do "yum install php-process", and all should be sweet again.
Hope this saves someone half an hour of research.

You can use this code in windows or if you system has no posix support:
<?php
if (!function_exists('posix_getpid')) {
  function posix_getpid() {
    return getmypid();
  }
}