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<?php $image = imagecreatefromjpeg('/path/to/picture.jpg'); $matrix = array(array(-1, -1, -1), array(-1, 20, -1), array(-1, -1, -1)); $divisor = array_sum(array_map('array_sum', $matrix)); imageconvolution($image, $matrix, $divisor, 0); echo imagecolorat($image, 0, 0);
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Uncaught Error: Call to undefined function imagecreatefromjpeg() in /in/Pm4r2:2 Stack trace: #0 {main} thrown in /in/Pm4r2 on line 2
Process exited with code 255.

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