http://cowburn.info/2008/01/22/imagecreatefrom-string-remote/ Online storage depot for Peter Cowburn Sat, 04 Feb 2012 12:58:26 +0000 hourly 1 http://wordpress.org/?v=3.3.1 http://cowburn.info/2008/01/22/imagecreatefrom-string-remote/#comment-44344 Peter Wed, 04 Mar 2009 01:23:04 +0000 http://cowburn.info/php/imagecreatefrom-string-remote/#comment-44344 Once the image has been loaded through any of the imagecreatefrom* functions, it is (to the best of my knowledge) actually of a type internal to GD. This means that it can be saved out as any type of image without needing to know the MIME of the original file in the blob. There are ways of determining the MIME type from the binary data but it's not worth delving into unless it is necessary. Another thought, if it's simpler or possible for you, would be to store the image type at the same time you write the blob to the database (usually just after uploading), for that <a href="http://php.net/getimagesize" rel="nofollow">getimagesize</a> or the <a href="http://php.net/fileinfo" rel="nofollow">Fileinfo</a> extension would be useful.. Once the image has been loaded through any of the imagecreatefrom* functions, it is (to the best of my knowledge) actually of a type internal to GD. This means that it can be saved out as any type of image without needing to know the MIME of the original file in the blob. There are ways of determining the MIME type from the binary data but it’s not worth delving into unless it is necessary. Another thought, if it’s simpler or possible for you, would be to store the image type at the same time you write the blob to the database (usually just after uploading), for that getimagesize or the Fileinfo extension would be useful..

]]> http://cowburn.info/2008/01/22/imagecreatefrom-string-remote/#comment-44330 Andrew Tue, 03 Mar 2009 23:53:17 +0000 http://cowburn.info/php/imagecreatefrom-string-remote/#comment-44330 I too was glad to find the imagecreatefromstring() function. As many people seem to be doing, it is helpful for creating an image from a mySQL blob field. However, eventually I need to echo the file back to a browser. This means creating the write MIME header of my own (header('Content-Type: image/filetype');) and calling one of imagefiletype($im);. Once you have the image created, is there a way to determine its type? Would appreciate your input. Thanks! I too was glad to find the imagecreatefromstring() function. As many people seem to be doing, it is helpful for creating an image from a mySQL blob field.
However, eventually I need to echo the file back to a browser. This means creating the write MIME header of my own (header(‘Content-Type: image/filetype’);) and calling one of imagefiletype($im);.
Once you have the image created, is there a way to determine its type? Would appreciate your input. Thanks!

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