Should only be used if your printer does not support the graphics() command.
See also bitImageColumnFormat().
<?php
/* Example print-outs using the older bit image print command */
require __DIR__ . '/../autoload.php';
use Mike42\Escpos\Printer;
use Mike42\Escpos\EscposImage;
use Mike42\Escpos\PrintConnectors\FilePrintConnector;
$connector = new FilePrintConnector("php://stdout");
$printer = new Printer($connector);
try {
$tux = EscposImage::load("resources/tux.png", false);
$printer->text("These example images are printed with the older\nbit image print command. You should only use\n\$p -> bitImage() if \$p -> graphics() does not\nwork on your printer.\n\n");
$printer->bitImage($tux);
$printer->text("Regular Tux (bit image).\n");
$printer->feed();
$printer->bitImage($tux, Printer::IMG_DOUBLE_WIDTH);
$printer->text("Wide Tux (bit image).\n");
$printer->feed();
$printer->bitImage($tux, Printer::IMG_DOUBLE_HEIGHT);
$printer->text("Tall Tux (bit image).\n");
$printer->feed();
$printer->bitImage($tux, Printer::IMG_DOUBLE_WIDTH | Printer::IMG_DOUBLE_HEIGHT);
$printer->text("Large Tux in correct proportion (bit image).\n");
} catch (Exception $e) {
/* Images not supported on your PHP, or image file not found */
$printer->text($e->getMessage() . "\n");
}
$printer->cut();
$printer->close();
/* Read stdout */
$outputStr = stream_get_contents($fd[1]);
fclose($fd[1]);
/* Read stderr */
$errorStr = stream_get_contents($fd[2]);
fclose($fd[2]);
/* Finish up */
$retval = proc_close($process);
if ($retval != 0) {
throw new Exception("Command {$cmd} failed: {$outputStr} {$errorStr}");
}
} else {
throw new Exception("Command '{$cmd}' failed to start.");
}
/* Load up the image */
try {
$img = EscposImage::load($dest);
} catch (Exception $e) {
unlink($dest);
throw $e;
}
unlink($dest);
/* Print it */
$printer->bitImage($img);
// bitImage() seems to allow larger images than graphics() on the TM-T20. bitImageColumnFormat() is another option.
$printer->cut();
} catch (Exception $e) {
echo $e->getMessage();
} finally {
$printer->close();
}
$logo = EscposImage::load("resources/escpos-php.png", false);
$imgModes = array(Printer::IMG_DEFAULT, Printer::IMG_DOUBLE_WIDTH, Printer::IMG_DOUBLE_HEIGHT, Printer::IMG_DOUBLE_WIDTH | Printer::IMG_DOUBLE_HEIGHT);
foreach ($imgModes as $mode) {
$printer->graphics($logo, $mode);
}
} catch (Exception $e) {
/* Images not supported on your PHP, or image file not found */
$printer->text($e->getMessage() . "\n");
}
$printer->cut();
/* Bit image */
try {
$logo = EscposImage::load("resources/escpos-php.png", false);
$imgModes = array(Printer::IMG_DEFAULT, Printer::IMG_DOUBLE_WIDTH, Printer::IMG_DOUBLE_HEIGHT, Printer::IMG_DOUBLE_WIDTH | Printer::IMG_DOUBLE_HEIGHT);
foreach ($imgModes as $mode) {
$printer->bitImage($logo, $mode);
}
} catch (Exception $e) {
/* Images not supported on your PHP, or image file not found */
$printer->text($e->getMessage() . "\n");
}
$printer->cut();
/* QR Code - see also the more in-depth demo at qr-code.php */
$testStr = "Testing 123";
$models = array(Printer::QR_MODEL_1 => "QR Model 1", Printer::QR_MODEL_2 => "QR Model 2 (default)", Printer::QR_MICRO => "Micro QR code\n(not supported on all printers)");
foreach ($models as $model => $name) {
$printer->qrCode($testStr, Printer::QR_ECLEVEL_L, 3, $model);
$printer->text("{$name}\n");
$printer->feed();
}
$printer->cut();
<?php
/*
* Example of dithering used in EscposImage by default, if you have Imagick loaded.
*/
require __DIR__ . '/../../autoload.php';
use Mike42\Escpos\Printer;
use Mike42\Escpos\EscposImage;
use Mike42\Escpos\PrintConnectors\FilePrintConnector;
$connector = new FilePrintConnector("/dev/usb/lp0");
$printer = new Printer($connector);
try {
/* Load with optimisations enabled. If you have Imagick, this will get you
a nicely dithered image, which prints very quickly
*/
$img1 = EscposImage::load(__DIR__ . '/../resources/tulips.png');
$printer->bitImage($img1);
/* Load with optimisations disabled, forcing the use of PHP to convert the
pixels, which uses a threshold and is much slower.
*/
$img2 = EscposImage::load(__DIR__ . '/../resources/tulips.png', false);
$printer->bitImage($img2);
$printer->cut();
} finally {
/* Always close the printer! */
$printer->close();
}
