我有一个程序，用于通过API提供VPS。脚本的核心部分将持续访问API(每5秒，15次)，直到API返回一个IP地址。执行大约需要30秒。
代码中没有错误，程序以97%的可靠性执行其功能。
但是，如果最终用户不耐烦，点击离开，脚本将提前结束，我的系统崩溃。
是否有一种方法来执行php脚本的一部分作为后台运行的守护程序?这样，如果用户不小心点击了，这个过程仍然在运行?或者其他方法?
脚本:
<?php
session_start();
require_once('../pages/mail/config.php');
DCID=1&VPSPLANID=1&SNAPSHOTID=df55172be2c87');
$cust_label = $_POST['sname'];;
//here we provision the server with vultr
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL,"https://api.vultr.com/v1/server/create?api_key=nnnnnn1eSKIee");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS,
"DCID=19&VPSPLANID=31&OSID=164&SNAPSHOTID=c24554280420a&label=".$cust_label."&enable_ipv6=yes");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$server_output = curl_exec ($ch);
curl_close ($ch);
//recovering the IP takes a little while
sleep(15);
echo 'first we get your IPv4 address';
//now we need the ip address
function getlist(){
$list_output = file_get_contents('https://api.vultr.com/v1/server/list?api_key=ddddddIOCe');
return $list_output;
}
$output = getlist();
$decoded = json_decode($output, true);
foreach($decoded as $value) {
$ip = $value['main_ip'];
$label = $value['label'];
$subid = $value['SUBID'];
//if the label matched the current on it session, get that data
if($label === $cust_label) {
$ipr = $ip;
}
}
//this one will get it
for ($x = 0; $x <= 15; $x++){
if($ipr === '0'){
sleep(5);
$output2 = getlist();
$decoded2 = json_decode($output2, true);
foreach($decoded2 as $value2) {
$ipd = $value2['main_ip'];
$label = $value2['label'];
$subid = $value['SUBID'];
if($label === $cust_label){
$ipr = $ipd;
break;
}
}
}
}
//no IPv4 is bad. error out and send a message to admin
if($ipr === '0'){
echo 'Something bad happened, we did not get and IP address back. A message has been sent to admin to review your account';
echo '<a id="ticket" target="_self" href="support/viewforum.php?f=4">Support Portal</a>';
echo '<a id="home" target="_self" href="index.php?p=home"><i>Home</i></a>';
$to = 'postmaster@ex-ler.com';
$subject = 'New entry failure';
$message = 'VPS initialization error occured';
$headers = 'From: postmaster@ex-ler.com' . "'r'n" .
'Reply-To: webmaster@ex-ler.com' . "'r'n" .
'X-Mailer: PHP/' . phpversion();
mail($to, $subject, $message, $headers);
exit();
}
//let's try and get the IPv6
$output3 = getlist();
$decoded3 = json_decode($output3, true);
foreach($decoded3 as $value3) {
$ipv6 = $value['v6_main_ip'];
$label = $value['label'];
$subid = $value['SUBID'];
if($label === $cust_label) {
$ipr6 = $ipv6;
}
}
$count = 0;
for ($x = 0; $x <= 25; $x++){
if(empty($ipr6)){
sleep(5);
echo 'here '.$x;
$output4 = getlist();
$decoded4 = json_decode($output4, true);
foreach($decoded4 as $value4) {
$ipdv6 = $value4['v6_main_ip'];
$label = $value4['label'];
$subid = $value['SUBID'];
if($label === $cust_label){
$ipr6 = $ipdv6;
break;
}
}
}
}
$_SESSION['label'] = $value['label'];
$_SESSION['SUBID'] = $value['SUBID'];
var_dump($_SESSION['SUBID']);
$domain = $_SESSION['DOMAIN'];
//now sink the IPs into the database
$pdo = new PDO(
'mysql:host=' . DB_HOST . ';dbname=' . DB_DATABASE, DB_USER, DB_PASSWORD
);
$pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$pdo->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
//$sql = 'INSERT into domains(label, ipv4) VALUES (:label, :ipaddress)';
$sql = 'UPDATE domains SET subid = :subid, label = :label, ipv4 = :ipaddress, ipv6 = :ipv6address WHERE domain = :domain';
$statement = $pdo->prepare($sql);
$statement->bindParam(':label', $cust_label, PDO::PARAM_STR, 12);
$statement->bindParam(':ipv6address', $ipr6, PDO::PARAM_STR, 48);
$statement->bindParam(':ipaddress', $ipr, PDO::PARAM_STR, 12);
$statement->bindParam(':domain', $domain, PDO::PARAM_STR, 255);
$statement->bindParam(':subid', $subid, PDO::PARAM_INT, 14);
$result = $statement->execute();
//go to member profile
header("location: ../index.php?p=member-profile");
?>
使用
ignore_user_abort(true);
因此，如果用户关闭窗口，PHP脚本将继续运行，直到它完成。
更多信息此处
您可以尝试将curl内容拆分到子进程中，然后在父进程中返回。您将使用的命令是pcntl_fork()
http://php.net/manual/en/function.pcntl-fork.php这里有一个示例模型，说明如何做到这一点:只需将curl代码放入子进程块(在sleep()执行的地方附近)，看看是否满足您的要求:
<?php
// this variable is here to prove that variables set outside of the
// child process' 'if' block can be accessed
$outsideVariable = "i'm from outside";
// fork starts a copy of this script
$pid = pcntl_fork();
// if the return from pcntl_fork() is -1, things have gone awry
if($pid == -1){
die("could not spawn child process. do some error handling";
}
// this is the code that gets executed in the original 'parent'
// process. you do html output here so the user doesn't have to
// wait for the email to be set.
else if($pid == 0){
print "return to user and stop execution";
return true;
}
// this is the child process, the copy of the process that is
// spawned seperately. you can do your curl
// stuff here.
else {
sleep(10); // simluating execution lag
// let's write to file to confirm the child process is doing
// stuff. we use $outsideVariable to show that this process
// can access stuff from the scope of the parent.
$fp = fopen("/tmp/foo","a");
fwrite($fp, "chil pid $pid $outsideVariable 'n");
}
?>