我有一个共享服务器
Linux,我面临一个奇怪的问题.我试图通过
PHP执行以下命令,它运行正常;给我返回PHP安装路径/usr/bin/PHP.
exec('which PHP');// This runs so exec is not disabled
但是我尝试用exec执行的任何命令(‘PHP …’);没有随机返回一个98到114个元素的数组,几乎全部都是垃圾.我跑的命令的例子是……
exec('PHP -v'); exec('PHP -i'); exec('/usr/bin/PHP -v');
以上都没有返回合理的东西.知道为什么PHP运行的任何命令没有执行?
下面是exec()返回给我的数据数组的var_dump().
编辑(更多RND之后)
我能够执行
exec('PHP -h')
它以可读格式重新表达了以下数组.
string(9) "PHP -help" string(47) "Usage: PHP [-q] [-h] [-s] [-v] [-i] [-f ]" string(27) " PHP [args...]" string(36) " -a Run interactively" string(69) " -b | Bind Path for external FASTCGI Server mode" string(57) " -C Do not chdir to the script's directory" string(58) " -c | Look for PHP.ini file in this directory" string(47) " -n No PHP.ini file will be used" string(56) " -d foo[=bar] Define INI entry foo with value 'bar'" string(70) " -e Generate extended information for debugger/profiler" string(46) " -f Parse . Implies `-q'" string(28) " -h This help" string(34) " -i PHP information" string(43) " -l Syntax check only (lint)" string(43) " -m Show compiled in modules" string(60) " -q Quiet-mode. Suppress HTTP Header output." string(60) " -s display colour Syntax highlighted source." string(33) " -v Version number" string(72) " -w display source with stripped comments and whitespace." string(46) " -z Load Zend extension ." string(75) " -T Measure execution time of script repeated times." This page was created in 0.055487155914307 seconds
哦,顺便说一下我用来测试的脚本是以下……
<?PHP $mtime = microtime(); $mtime = explode(" ",$mtime); $mtime = $mtime[1] + $mtime[0]; $starttime = $mtime; if(!empty($_GET['p']) && $_GET['p'] == true){ //$command = 'PHP -help'; //this works //$command = 'cat ' . getcwd() . '/dummy1.txt'; //this works echo's a simple text file //$command = 'PHP -q ' . getcwd() . '/dummy1.txt'; //NOT WORKING $command = 'PHP -m'; //NOT WORKING echo '<div><pre>'; var_dump($command); echo '</pre></div>'; exec($command,$output,$return); //passthru($command,$output); echo '<div><pre>'; foreach($output as $key => $value){ var_dump($output[$key]); } echo '</pre></div>'; } $mtime = microtime(); $mtime = explode(" ",$mtime); $mtime = $mtime[1] + $mtime[0]; $endtime = $mtime; $totaltime = ($endtime - $starttime); echo "This page was created in ".$totaltime." seconds"; ?>