php多进程实验笔记
['id' => ['>=' => 672600],]];
$result = $pdo->count('Crawl_Receive_Task', $params);
$pdo = null;
return $result;
}
function selectCountList()
{
$pdo = PDO_MySQL::getInstance();
$conditions = array(
'fields' => 'id,url,info_path',
'where' => ['id' => ['>=' => 672600],]
);
$result = $pdo->getAll('Crawl_Receive_Task', $conditions);
$pdo = null;
return $result;
}
function update($data, $id)
{
$pdo = PDO_MySQL::getInstance();
$where = array(
'where' => array(
'id' => $id
)
);
$result = $pdo->update('Crawl_Receive_Task', $where, $data);
$pdo = null;
return $result;
}
$t = totalCount();
$list = selectCountList();
$start=0;
$threads = 4;
while($start<$t){
if($start == $t) break;
for($i=$start;$i<$start+$threads;$i++){
$pids[$i] = pcntl_fork();
if($pids[$i]) {
echo $pids[$i]."parent".PHP_EOL;
}
else if(!$pids[$i]) {
echo getmypid()."--".$pids[$i]."--child".PHP_EOL;
$result = Curl::request('GET',$list[$i]['info_path']);
update(['add_time'=>date('Y-m-d H:i:s'),'test'=>$list[$i]['id']],$list[$i]['id']);
echo $result."-----------------".PHP_EOL;
exit();
}
usleep(100);
}
for($i=$start;$i<$start+$threads;$i++){
pcntl_waitpid($pids[$i], $status, WUNTRACED);
$status = pcntl_wexitstatus($status);
echo "--------$status finished--------".PHP_EOL;
}
$start+=$threads;
}|-php-fpm,16784
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| |-grep,18003 php
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