posix_sysconf
PHP function
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(PHP 8 >= 8.3.0)
Returns system runtime information
Description
posix_sysconf(int $conf_id): int
Returns system runtime information.
Parameters
conf_idIdentifier 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
Return Values
Returns the numeric value related to conf_id
Examples
posix_sysconf() example
Returns the number of active cpus.
php
<?php
echo posix_sysconf(POSIX_SC_NPROCESSORS_ONLN);
?>The above example will output:
output
2