php_getimagetype 4181 ext/exif/exif.c itype = php_getimagetype(stream, NULL TSRMLS_CC); php_getimagetype 1302 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);