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