36 lines
1.3 KiB
PHP
36 lines
1.3 KiB
PHP
<?php
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/*
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* Example of one way you could load a PNG data URI into an EscposImage object
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* without using a file.
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*/
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require __DIR__ . '/../../autoload.php';
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use Mike42\Escpos\Printer;
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use Mike42\Escpos\PrintConnectors\FilePrintConnector;
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use Mike42\Escpos\ImagickEscposImage;
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// Data URI for a PNG image (red dot from https://en.wikipedia.org/wiki/Data_URI_scheme )
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$uri = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAUA
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AAAFCAYAAACNbyblAAAAHElEQVQI12P4//8/w38GIAXDIBKE0DHxgljNBAAO
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9TXL0Y4OHwAAAABJRU5ErkJggg==";
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// Convert data URI to binary data
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$imageBlob = base64_decode(explode(",", $uri)[1]);
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// Give Imagick a filename with the correct extension to stop it from attempting
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// to identify the format itself (this avoids CVE-2016–3714)
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$imagick = new Imagick();
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$imagick -> setResourceLimit(6, 1); // Prevent libgomp1 segfaults, grumble grumble.
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$imagick -> readImageBlob($imageBlob, "input.png");
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// Load Imagick straight into an EscposImage object
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$im = new ImagickEscposImage();
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$im -> readImageFromImagick($imagick);
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// Do a test print to make sure that this EscposImage object has the right data
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// (should see a tiny bullet point)
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$connector = new FilePrintConnector("php://output");
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$printer = new Printer($connector);
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$printer -> bitImage($im);
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$printer -> cut();
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$printer -> close();
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