php_getimagetype 4181 ext/exif/exif.c 	itype = php_getimagetype(stream, NULL TSRMLS_CC);
php_getimagetype 1306 ext/standard/image.c 	itype = php_getimagetype(stream, NULL TSRMLS_CC);
php_getimagetype   62 ext/standard/php_image.h PHPAPI int php_getimagetype(php_stream *stream, char *filetype TSRMLS_DC);