php_getimagetype 4166 ext/exif/exif.c 	itype = php_getimagetype(stream, NULL);
php_getimagetype 1321 ext/standard/image.c 	itype = php_getimagetype(stream, NULL);
php_getimagetype   62 ext/standard/php_image.h PHPAPI int php_getimagetype(php_stream *stream, char *filetype);