PHP - Manual: posix_sysconf
2025-10-24
(PHP 8 >= 8.3.0)
posix_sysconf — Returns system runtime information
conf_id
Identifier of the variable with the following constants
POSIX_SC_ARG_MAX, POSIX_SC_PAGESIZE,
POSIX_SC_NPROCESSORS_CONF, POSIX_SC_NPROCESSORS_ONLN,
POSIX_SC_CHILD_MAX, POSIX_SC_CLK_TCK
Returns the numeric value related to conf_id
示例 #1 posix_sysconf() example
Returns the number of active cpus.
<?php
echo posix_sysconf(POSIX_SC_NPROCESSORS_ONLN);
?>以上示例会输出:
2
官方地址:https://www.php.net/manual/en/function.posix-sysconf.php