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POGDs' imageflip() is not working - code just stops
 

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  1. POGDs' imageflip() is not working - code just stops
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    <p>I'm trying to flip an image with php gd function <code>imageflip()</code>. I have GD installed. I'm using WAMP and codeigniter on Windows. (and it's kind of difficult to implement imagemagick on wamp - so I would prefer not to). imageflip() should work as I see it. I'm using PHP version 5.4.16. </p> <p>Maybe I'm missing something...</p> <p>from <code>phpinfo()</code>:</p> <p><strong>gd</strong></p> <pre><code>GD Support enabled GD Version bundled (2.1.0 compatible) FreeType Support enabled FreeType Linkage with freetype FreeType Version 2.4.10 GIF Read Support enabled GIF Create Support enabled JPEG Support enabled libJPEG Version 8 PNG Support enabled libPNG Version 1.2.50 WBMP Support enabled XPM Support enabled libXpm Version 30411 XBM Support enabled Directive Local Value Master Value gd.jpeg_ignore_ warning 0 0 </code></pre> <p><em><strong>I have this code:</em></strong></p> <pre><code>foreach($products_settings as &amp;$ps) { $filename = $_SERVER['DOCUMENT_ROOT'] . $ps['product_file']; $source_image = imagecreatefromjpeg($filename); //Put source image-resource into array $ps['source_image'] = $source_image; } </code></pre> <p><strong>and it works..</strong></p> <p>When I use <code>imagerotate()</code> it <strong>works</strong> as well...</p> <pre><code>foreach($products_settings as &amp;$ps) { $filename = $_SERVER['DOCUMENT_ROOT'] . $ps['product_file']; $source_image = imagecreatefromjpeg($filename); //rotate image $angle = $ps['product_angle']; if (intval($angle) &lt;&gt; 0) { $source_image = imagerotate($source_image, 360-$angle, imageColorAllocateAlpha($source_image, 255, 255, 255, 127)); } //Put source image-resource into array $ps['source_image'] = $source_image; } </code></pre> <p><strong>...BUT</strong> when I use imageflip ( <a href="http://php.net/manual/en/function.imageflip.php" rel="nofollow">http://php.net/manual/en/function.imageflip.php</a> )</p> <pre><code>foreach($products_settings as &amp;$ps) { $filename = $_SERVER['DOCUMENT_ROOT'] . $ps['product_file']; $source_image = imagecreatefromjpeg($filename); imageflip($source_image, IMG_FLIP_BOTH); //code execution stops here //Put source image-resource into array $ps['source_image'] = $source_image; } </code></pre> <p>then the <code>imageflip()</code> makes the code stop (If I add log message the row after it doesn't log). I can't figure out WHY? What would be the reason for that? I can't see anything in errorlogs in codeigniter/php/apache. The manual says that the function will return false when fail, but I know the image is correct because I'm using other gd function for the same image with other gd-functions (as <code>imagerotate</code>, <code>imageColorAllocateAlpha</code> etc)</p> <p>I've also tried this:</p> <pre><code>try { imageflip($source_image, IMG_FLIP_BOTH); } catch (Exception $e) { log_message('DEBUG', 'img err' . $e-&gt;__toString()); } </code></pre> <p>But nothings get logged...</p> <p>How to debug this?</p>
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    1. USbestprogrammerintheworld
    1. USbestprogrammerintheworld
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    1. COIs it possible to surround it with a try/catch? And see if there is an exception thrown?
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      1. POGDs' imageflip() is not working - code just stops
      1. USScottJShea
    2. CO@ScottJShea - I've tried that and I don't get any error...
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      1. POGDs' imageflip() is not working - code just stops
      1. USbestprogrammerintheworld
    3. COPlease enable error logging and follow the error log. It will tell you the reason. See as well: [How to get useful error messages in PHP?](http://stackoverflow.com/q/845021/367456) - And actually it's not returning false (as you have put in the title), you script just crashes because you called a function that does not exist. That simple it is (well if you know where to look it's always simple, so no pun intended :D)
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      1. POGDs' imageflip() is not working - code just stops
      1. UShakre
 

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