For who want to show "animated" gif. This getImageBlob() will showing only one frame of image.
Use getImagesBlob() instead.
Example:
<?php
$Imagick = new \Imagick($real_source_image_path_animated_gif);
header("Content-Type: image/gif");
echo $Imagick->getImagesBlob();
?>
Imagick::getImageBlob
(PECL imagick 2.0.0)
Imagick::getImageBlob — Returns the image sequence as a blob
설명
string Imagick::getImageBlob
( void
)
Implements direct to memory image formats. It returns the image sequence as a string. The format of the image determines the format of the returned blob (GIF, JPEG, PNG, etc.). To return a different image format, use Imagick::setImageFormat().
반환값
Returns a string containing the image.
오류/예외
오류시에 ImagickException이 발생합니다.
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User Contributed Notes 3 notes
Vee W ¶
8 years ago
jim at jimohalloran dot com ¶
3 years ago
Further to Trevor's note above about getImageBlob potentially returning an empty string for large images.
This seems image format dependent. I have a large (12046x8363) image which is returned ok. But if I call setImageFormat('pdf') and then call getImageBlob() again. Example:
<?php
// Image Manipulation here.
$pngData = $imagick->getImageBlob(); // Returns a large PNG.
$imagick->setImageFormat('pdf');
$pdfData = $imagick->getImageBlob(); // Returns empty string immediately
?>
Trevor ¶
13 years ago
It seems that this method can return a zero-length string if faced with large-ish data. No exceptions are thrown.
<?php
$image = new Imagick();
if (!$image->newImage(1000,1,'white')) throw new Exception();
if (!$image->scaleImage(0,200)) throw new Exception();
print "Image size: {$image->getImageWidth()},{$image->getImageHeight()}\n";
if (!$image->setImageFormat("jpeg")) throw new Exception();
$a = $image->getImageBlob();
print "Rendered to ".strlen($a)." bytes\n";
?>
Restrict your output image size, or ensure that the blob you get back isn't empty. (Note that IM seems to be doing the work, it delays for some time. But there's no indication of any error anywhere.)
