File "POpen.php"
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<?php
namespace ExecWithFallback;
/**
* Emulate exec() with system()
*
* @package ExecWithFallback
* @author Bjørn Rosell <it@rosell.dk>
*/
class POpen
{
/**
* Emulate exec() with system()
*
* @param string $command The command to execute
* @param string &$output (optional)
* @param int &$result_code (optional)
*
* @return string | false The last line of output or false in case of failure
*/
public static function exec($command, &$output = null, &$result_code = null)
{
$handle = @popen($command, "r");
if ($handle === false) {
return false;
}
$result = '';
while (!@feof($handle)) {
$result .= fread($handle, 1024);
}
//Note: Unix Only:
// pclose() is internally implemented using the waitpid(3) system call.
// To obtain the real exit status code the pcntl_wexitstatus() function should be used.
$result_code = pclose($handle);
$theOutput = preg_split('/\s*\r\n|\s*\n\r|\s*\n|\s*\r/', $result);
// remove the last element if it is blank
if ((count($theOutput) > 0) && ($theOutput[count($theOutput) -1] == '')) {
array_pop($theOutput);
}
if (count($theOutput) == 0) {
return '';
}
if (gettype($output) == 'array') {
foreach ($theOutput as $line) {
$output[] = $line;
}
} else {
$output = $theOutput;
}
return $theOutput[count($theOutput) -1];
}
}