Unable to run

[jaanli]

# jaan @ host in ~/projects/zotero-remarkable on git:master x [15:11:54]
$ ./zotero-remarkable.php
./zotero-remarkable.php: line 1: ?php: No such file or directory
./zotero-remarkable.php: line 3: require_once: command not found
./zotero-remarkable.php: line 5: //: is a directory
./zotero-remarkable.php: line 6: //: is a directory
./zotero-remarkable.php: line 7: syntax error near unexpected token `$errNo,'
./zotero-remarkable.php: line 7: `function errHandle($errNo, $errStr, $errFile, $errLine) {'

Any ideas?