PHP Manual
PCNTL 函数
Enable/disable asynchronous signal handling or return the old setting

pcntl_async_signals

(PHP 7 >= 7.1.0)

pcntl_async_signals — Enable/disable asynchronous signal handling or return the old setting

说明

pcntl_async_signals ([ bool $on = NULL ] ) : bool

If the on parameter is omitted, pcntl_async_signals() returns whether asynchronous signal handling is enabled. Otherwise, asynchronous signal handling is enabled or disabled.

参数

on: Whether asynchronous signal handling should be enabled.

返回值

When used as getter (that is without the optional parameter) it returns whether asynchronous signal handling is enabled. When used as setter (that is with the optional parameter given), it returns whether asynchronous signal handling was enabled before the function call.

参见

declare

php cubrid mysql 兼容性函数 return a numerical array with the values of the current row php cubrid 函数 return the id generated for the last updated auto increment column php variable handling 函数 dumps a string representation of an internal zend value to output php frontbase 函数 enable or disable autocommit php frontbase 函数 enable or disable frontbase warnings php variable handling 函数返回资源（resource）类型 php inotify 函数 return a number upper than zero if there are pending events php variable handling 函数检测参数是否为合法的可调用结构 php variable handling 函数 verify that the contents of a variable is a countable value php variable handling 函数检测变量是否为数字或数字字符串 php judy 函数 return or print the current php judy version php ncurses 函数 enable or disable a keycode php ncurses 函数 do not translate newline and carriage return / line feed php pcntl 函数 enable/disable asynchronous signal handling or return the old setting php pcntl 函数 get the current handler for specified signal php pcntl 函数等待或返回fork的子进程状态 php socket 函数 return a string describing a socket error php svn 函数 return true if content is different false otherwise php tidy 函数 return a string representing the parsed tidy markup php sdo 函数 return the property for the specified sequence index