--TEST-- Test mail() function : mail.log ini setting --INI-- sendmail_path=tee /tmp/mail.out >/dev/null mail.log = /tmp/mail.log --SKIPIF-- <?php if(substr(PHP_OS, 0, 3) == "WIN") die("skip Won't run on Windows"); ?> --FILE-- <?php date_default_timezone_set("UTC"); $logfile = ini_get("mail.log"); if (file_exists($logfile)) { unlink($logfile); } touch($logfile); clearstatcache(); $to = "test@example.com"; $subject = "mail.log test"; $message = "Testing mail.log"; $headers = "X-Test: 1"; var_dump(filesize($logfile) == 0); clearstatcache(); var_dump(mail($to, $subject, $message, $headers)); var_dump(filesize($logfile) > 0); clearstatcache(); echo file_get_contents($logfile); ?> Done --CLEAN-- <?php unlink("/tmp/mail.log"); unlink("/tmp/mail.out"); ?> --EXPECTF-- bool(true) bool(true) bool(true) [%d-%s-%d %d:%d:%d UTC] mail() on [%smail_log.php:%d]: To: test@example.com -- Headers: X-Test: 1 Done