PHP脚本即使使用了set_time_limit(0),仍会停止。

4
我看过其他10篇帖子,里面的人似乎和我有同样的问题。大多数建议使用“set_time_limit(0)”,但即使使用这个命令,在运行任何脚本时,总是在大约9-10分钟后停止。
我已经尝试了许多组合下列三个变量,将它们设置为“-1”、“0”和“9999999”,但总是停止。不久前,我曾经让下面的完全相同的脚本运行一整夜。突然有一天,我无法运行任何脚本了。
我100%确定它在完成之前停止,并且它不是由于错误而停止。因为现在我的任何脚本都会在同样的应用程序运行时间停止。
非常沮丧,任何帮助将不胜感激。
在php.ini中:
max_input_time = -1
max_execution_time = 0
set_time_limit = 0

其他脚本:(也会在10分钟后停止)

<?php
set_time_limit(0);
ignore_user_abort(true);
function categoryinsert($english, $name, $keywords, $language)
{
    if(!$english)
    {
        echo "no english recieved! in categoryinsert<br />";
        return 0;
    }
    else if(!$name)
    {
        echo "no name recieved! in categoryinsert<br />";
        return 0;
    }
    else if(!$language)
    {
        echo "no language recieved! in categoryinsert<br />";
        return 0;
    }
    $DBConnect = mysqli_connect("localhost", "USER***", "************");
    mysqli_set_charset($DBConnect, "utf8");
    mysqli_select_db($DBConnect, "db***");

    $qwry = "INSERT INTO `categories` (english, name, keywords, language) values ('$english','$name','$keywords','$language');";
            $QueryResult = mysqli_query($DBConnect, $qwry);
            //Or die("<p>Unable to execute the query.[".$qwry."]<p>"
            //. "<p>Error code " . mysqli_errno($DBConnect)
            //. ": " . mysqli_error($DBConnect)) . "</p>"; 

            mysqli_close($DBConnect);
}
function checkfor($english, $lang)
{
    $DBConnect = mysqli_connect("localhost", "USER***", "************");
    mysqli_set_charset($DBConnect, "utf8");
    mysqli_select_db($DBConnect, "db***");

    $qwry = "SELECT * FROM `categories` where english = '$english' and language = '$lang';";
            $QueryResult = mysqli_query($DBConnect, $qwry);

            $Row = mysqli_fetch_row($QueryResult);

            mysqli_close($DBConnect);

            if($Row) return true;
            else return false;
}
function categoryupdate($keywords, $language, $english)
{
if(!$english)
    {
        echo "no english recieved! in categoryupdate<br />";
        return 0;
    }
    else if(!$keywords)
    {
        echo "no keywords recieved! in categoryupdate<br />";
        return 0;
    }
    else if(!$language)
    {
        echo "no language recieved! in categoryupdate<br />";
        return 0;
    }
    $DBConnect = mysqli_connect("localhost", "USER***", "************");
    mysqli_set_charset($DBConnect, "utf8");
    mysqli_select_db($DBConnect, "db***");

    $qwry = "UPDATE `categories` set keywords = '$keywords' where language = '$language' and language = '$language';";
            $QueryResult = mysqli_query($DBConnect, $qwry)
            Or die("<p>Unable to execute the query.[".$qwry."]<p>"
            . "<p>Error code " . mysqli_errno($DBConnect)
            . ": " . mysqli_error($DBConnect)) . "</p>"; 

            mysqli_close($DBConnect);
}
function translatekeywords($keywords, $tolang)
{

    if(!$keywords)
    {
        echo "no keywords recieved! in translatekeywords<br />";
        return 0;
    }
    else if(!$tolang)
    {
        echo "no tolang recieved! in translatekeywords<br />";
        return 0;
    }
    $parts = explode(", ", $keywords);
    $count = 0;
    $out = "";

    while($parts[$count])
    {
        if(($count != 0) and ($result)) $out = $out . ", ";
        $result = translate($parts[$count], 'eng', $tolang);
        if($result) $out = $out . $result;
        $count++;
    }

    return $out;
}
include '../functions.php';

$DBConnect = mysqli_connect("localhost", "USER***", "************");
    mysqli_set_charset($DBConnect, "utf8");
    mysqli_select_db($DBConnect, "db***");


            $qwry = "SELECT english, keywords FROM `categories` where language = 'eng' order by name ASC;";
            $QueryResult = mysqli_query($DBConnect, $qwry)
            Or die("<p>Unable to execute the query.[".$qwry."]<p>"
            . "<p>Error code " . mysqli_errno($DBConnect)
            . ": " . mysqli_error($DBConnect)) . "</p>"; 

            $count = 0;
            $Row = mysqli_fetch_row($QueryResult);

            do
            {
                $categories[$count] = $Row;             
                echo $count.') ['.$categories[$count][0].']['.$categories[$count][1].']<br />';
                $Row = mysqli_fetch_row($QueryResult);
                $count++;
            }while($Row);

            $qwry = "SELECT ISO3 FROM `languages` order by name ASC;";
            $QueryResult = mysqli_query($DBConnect, $qwry)
            Or die("<p>Unable to execute the query.[".$qwry."]<p>"
            . "<p>Error code " . mysqli_errno($DBConnect)
            . ": " . mysqli_error($DBConnect)) . "</p>"; 

            $count = 0;
            $Row = mysqli_fetch_row($QueryResult);

            do
            {
                $languages[$count] = $Row[0];
                $Row = mysqli_fetch_row($QueryResult);
                echo '['.$languages[$count].']<br />';
                $count++;
            }while($Row);

            $lcount = 0;
            do
            {
                if($languages[$lcount] != 'eng')
                {
                    $ccount = 0;
                    do
                    {
                        if(!checkfor($categories[$ccount][0], $languages[$lcount]))
                        {
                            $name = translate($categories[$ccount][0], 'eng', $languages[$lcount]);
                            if($categories[$ccount][1]) $keywords = translatekeywords($categories[$ccount][1],$languages[$lcount]);
                            categoryinsert($categories[$ccount][0], $name, $keywords, $languages[$lcount]);
                        }
                        $ccount++;
                    }while($categories[$ccount]);
                }

            $lcount++;
            }while($languages[$lcount]);

mysqli_close($DBConnect);
echo "FINISHED! [$lcount] languages proccessed";
?>

脚本:

<html>
<head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"></head>
<body>
<?php 
set_time_limit(0);
ignore_user_abort(true);
include 'functions.php'; 

function insertsentence($sentence, $lang, $id, $user)
{
    if(($lang == 'epo') and (strlen($sentence) < 255) )
    {
        $DBConnect = mysqli_connect("localhost", "xxxxx_userx", "xxxxxxx!");
        mysqli_set_charset($DBConnect, "utf8");
        mysqli_select_db($DBConnect, "xxxxx_main");

            $insertqwry = "INSERT INTO `sentences` (sentence, user, id, language) VALUES ('".withslashes($sentence)."', '".withslashes($user)."', '".withslashes($id)."', '".withslashes($lang)."');";

        $QueryResult = mysqli_query($DBConnect, $insertqwry) ;
        //Or die("<p>Unable to execute the query.[".$insertqwry."]<p>"
        //. "<p>Error code " . mysqli_errno($DBConnect)
        //. ": " . mysqli_error($DBConnect)) . "</p>"; 

        mysqli_close($DBConnect);
return 1;
    }

}

$myFile = "sentences_detailed.csv"; 
$fh = fopen($myFile, 'r');
$s = fread($fh, 3);
if ($s != pack('CCC',0xef, 0xbb, 0xbf)) {
    // bom not found, rewind file
    fseek($fh, 0, SEEK_SET);
}

$count = 0;
ob_start();
do
{

    $line = preg_replace('/^\p{Z}+|\p{Z}+$/u', '', withslashes(trim(fgets($fh))));
    $parts = explode("  ", $line);
        $id = $parts[0];
        $lang = $parts[1];
        $sentence = withslashes($parts[2]);
        $user = withslashes($parts[3]);
        $note = "";


        if ((!$line) or ($line == "") or ($line == "!"))
        {
            echo ($count-1)." entries were processed<br />";
            echo "done<br />";
            exit();
        }



                if ($sentence != "!" )
                {
                    if (insertsentence($sentence, $lang, $id, $user))
                    echo "!";
                }

        ob_flush();
        flush();

    $count++;

    echo ".";

}while($line);

fclose($fh);
mysqli_close($DBConnect);

echo ($count-1)." entries were processed<br />";

?>
</body>
</html>
编辑:无论我运行什么脚本,或者它多么简单,它总是在大约10分钟后停止。所以我怀疑这与我的脚本中的代码无关。因此我要补充说明一下,我正在运行脚本的web服务器,位于Bluehost上。

1
似乎是标准服务器超时。一个方便的解决方法是每隔一段时间向页面打印一些内容,从而保持连接活动状态。 - Gil
1
我在打印点号,是吗? - user1397417
1
从你的代码来看,“insertsentence”没有返回任何内容,因此“。”没有被打印出来。 - Gil
2
每次像这样插入时连接和断开连接,并且不使用预处理语句和/或事务,这是极其、极其低效的做法,这并没有直接回答你的问题,所以我在使用评论。 - Victory
使用反斜杠将半引号转义的功能,可以通过 withslashes 函数实现。 - user1397417
显示剩余23条评论
4个回答

7
答案是这是Bluehost对我的账户设置的限制。以下是他给我的回复:
...
The Dedicated IP (+$3.33 per month) will increase the limits on the account.


    The following it the limits on how the server will kill processes with and without the Dedicated IP on the account: 

                                    With a Dedicated IP         Without Dedicated IP
Apache/Web (HTML/PHP/Downloads)     12 hours                    10 minutes
...

1

一些想法。

首先,你的代码有这些调用名为withslashes()的函数,我假设它是一个自定义函数,旨在向引号和其他字符添加斜杠(也称为转义), 但你正在使用MySQLi调用,对吧?那么为什么不避免重新发明轮子,只需使用mysqli_real_escape_string(),它是MySQLi扩展的一部分?

此外,我添加了mysqli_free_result(),它“释放与结果相关联的内存。”即使查询的结果只是确认查询已运行,这也不会有害。

我还添加了sleep()值`秒,至少可以稍微限制进程,让服务器有喘息的空间。

整个目标是使用内置的PHP函数,在运行MySQL查询时避免使用过多的RAM,并将脚本暂停1秒钟以给它喘息的空间。

这是一个重构后的insertsentence()版本,使用第一组改进性能的想法:
function insertsentence($sentence, $lang, $id, $user) {

    if (($lang == 'epo') and (strlen($sentence) < 255)) {
        $DBConnect = mysqli_connect("localhost", "xxxxx_userx", "xxxxxxx!");
        mysqli_set_charset($DBConnect, "utf8");
        mysqli_select_db($DBConnect, "xxxxx_main");

        $insertqwry = "INSERT INTO `sentences` (sentence, user, id, language)"
                    . " VALUES ('$sentence', '$user', '$id', '$lang');"
                    ;

        // Escape the query.
        $insertqwry = mysqli_real_escape_string($DBConnect, $insertqwry);

        $QueryResult = mysqli_query($DBConnect, $insertqwry) ;

        // Free the result set.
        mysqli_free_result($QueryResult);

        mysqli_close($DBConnect);

        // Sleep for 1 second.
        sleep(1);

        return TRUE;
    }
}

但是为什么不使用mysqli_stmt_bind_param()来充分利用MySQLi的预处理语句功能呢?这样,您就不再需要使用mysqli_real_escape_string(),因为预处理语句基本上可以处理所有这些内容。

考虑到这一点,这里有另一个重构版本的insertsentence(),它使用了mysqli_stmt_bind_param()

function insertsentence($sentence, $lang, $id, $user) {

    if (($lang == 'epo') and (strlen($sentence) < 255)) {
        $DBConnect = mysqli_connect("localhost", "xxxxx_userx", "xxxxxxx!");
        mysqli_set_charset($DBConnect, "utf8");
        mysqli_select_db($DBConnect, "xxxxx_main");

        $insertqwry = "INSERT INTO `sentences` (sentence, user, id, language)"
                    . " VALUES (?, ?, ?, ?);"
                    ;

        // Bind the values to the statement.
        mysqli_stmt_bind_param($insertqwry, 'ssis', $sentence, $user, $id, $lang);

        $QueryResult = mysqli_query($DBConnect, $insertqwry) ;

        // Free the result set.
        mysqli_free_result($QueryResult);

        mysqli_close($DBConnect);

        // Sleep for 1 second.
        sleep(1);

        return TRUE;
    }
}

请注意 mysqli_stmt_bind_param() 中的 'ssds'。每个字母都确定了您 4 个值的类型。因此,在这种情况下,它是字符串 (sentence)、字符串 (user)、整数 (id)、字符串 (language),这是根据您提供的数据做出的最佳猜测。

mysqli_free_result真的应该在mysqli_close之后吗? - user1397417
@user1397417 不对,已经更正。 - Giacomo1968

1
听起来你的脚本受到服务器的限制。我认为你可以在php.ini中进行更改。

1
考虑使用PHP的flush函数,这样你就可以连续执行循环 - 我知道这不是最好的和最终的解决方案,但这可能对你有帮助 :)
请先看example

你没有看我发布的脚本吗?我正在使用 flush。而且看起来我使用的方式和你的示例一样。 - user1397417
你是否包含了 sleep(2); 函数? - Raj Sf
不,我没有。这个文件有数百万行,所以我宁愿不要让它变得更慢。你认为这个sleep()函数会有什么帮助吗? - user1397417
使用sleep()或usleep()是一个不错的主意,如果进程太重,可以让服务器负载下降 - 至少你可以试试;) - Raj Sf

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