PHP 多进程DEMO

pcntl_DEMO1.php

<?php
declare( ticks=1 );

pcntl_signal( SIGCHLD, "sig_handler" );
function sig_handler( $signo ) {
	switch ( $signo ) {
		case SIGCHLD:
			$status   = 0;
			$child_id = pcntl_wait( $status );
			echo sprintf( "child exit id: {$child_id} \n" );
//			exit( 0 );
			break;

		default:
			echo 'uncaugh signal !';
	}

}

$i   = 0;
$pid = pcntl_fork();
if ( $pid > 0 ) {
	echo "我是parent \n";
	while ( 1 ) {
		$i ++;
		sleep( 1 );
		echo "父进程" . $i . PHP_EOL;
		if ( $i > 20 ) {
			break;
		}
	}
	$name = "小头爸爸";
} elseif ( $pid == - 1 ) {
	die( 'fork error' );
} else {
	echo "child begin \n";
	//子进程得到的$pid为0, 所以这里是子进程执行的逻辑。
	while ( 1 ) {
		$i ++;
		sleep( 1 );
		echo '子进程' . $i . PHP_EOL;
		if ( $i > 10 ) {
			echo "child exit \n";
			exit( 0 );
		}
	}
	$name = "大头儿子";
}

var_dump( $name );