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run code in 300+ PHP versions simultaneously
<?php $descriptorspec = array( 0 => array("pipe", "r"), 1 => array("pipe", "w"), 2 => array("file", "/tmp/error-output.txt", "a") ); $cwd = '/tmp'; $env = array('some_option' => 'aeiou'); $process = proc_open('/bin/ls', $descriptorspec, $pipes, $cwd); var_dump($process); echo stream_get_contents($pipes[1]);

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