Windows/php pclose和popen问题 [英] Windows/php pclose and popen issue

问题描述

这是我的代码:

<?php
    require_once 'dbconnect.php';
    function execInBackground($cmd) { 
        if (substr(php_uname(), 0, 7) == "Windows"){ 
            pclose(popen("start /B ". $cmd, "r"));  
        } 
        else { 
            exec($cmd . " > /dev/null &");   
        } 
    } 

    if(isset($_GET['date'])){
        //CHECK LOCK
        $checkLock = "Select IS_FREE_LOCK('overnight') as `lock`;";
        $result = mysql_query($checkLock) or die(mysql_error());
        while($information = mysql_fetch_array($result)){
            if($information['lock'] == 0){
                die('Overnight is already running, please try again later.');
            }
        }
        execInBackground("php overnightQueries.php {$_GET['date']}");
        //echo "<pre>".print_r($output2, true)."</pre>";
        header('Refresh: 3; url=index.php');
        die('running queries...');
    }
    else {

        die('PLEASE SET DATE');

    }
?>

我正在使用Windows计算机.

I am using a windows machine.

我收到以下警告:

警告:popen(夜间启动/B phpQueries.php 2011_08_12，r):在第5行的C:\ inetpub \ GTSA \ runOvernight.php中没有错误

Warning: popen(start /B php overnightQueries.php 2011_08_12,r): No error in C:\inetpub\GTSA\runOvernight.php on line 5

AND:

警告:pclose()期望参数1为资源，在第5行的C:\ inetpub \ GTSA \ runOvernight.php中给出布尔值

Warning: pclose() expects parameter 1 to be resource, boolean given in C:\inetpub\GTSA\runOvernight.php on line 5

推荐答案

$handle = popen("start /B ". $cmd, "r");  
if ($handle === FALSE) {
   die("Unable to execute $cmd");
}
pclose($handle);

如果存在问题，则popen返回false，您将其盲目传递给pclose，因此是第二个错误.

popen returns false if there was a problem, which you blindly pass to pclose, hence the second error.

对于第一个错误，请检查PHP是否在您环境的路径中-您可能需要指定php.exe的绝对路径.

As for the first error, check that PHP is in your environment's path - you may need to specify an absolute path to php.exe.

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