$cmd = str_replace( '%h', wfEscapeShellArg( $params['physicalHeight'] ),
str_replace( '%w', wfEscapeShellArg( $params['physicalWidth'] ), $cmd ) ); # Size
wfDebug( __METHOD__ . ": Running custom convert command $cmd\n" );
$cmd = str_replace( '%h', wfEscapeShellArg( $params['physicalHeight'] ),
str_replace( '%w', wfEscapeShellArg( $params['physicalWidth'] ), $cmd ) ); # Size
wfDebug( __METHOD__ . ": Running custom convert command $cmd\n" );