posix_getpid

(PHP 4, PHP 5, PHP 7, PHP 8)

posix_getpid — 返回当前进程 id

说明

posix_getpid(): int

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

参数

此函数没有参数。

返回值

返回进程 id 号，是整型（int）。

范例

示例 #1 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)

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User Contributed Notes 5 notes

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zapolski at gmail dot com ¶

11 years ago


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

# yum install php-process

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Yzmir Ramirez ¶

10 years ago


You can also try using getmypid() instead.

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andy at haveland dot com ¶

12 years ago


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.

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ia dot beladel at protonmail dot com ¶

1 month ago


A fall back function:
<?php
    function get_current_id() {
        if(!function_exists(posix_getpid()))
            return getmypid();
        
        return posix_getpid();
    }
?>

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victor at gmail dot com ¶

2 years ago


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();
    }
}

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