1. Go to the official website to download the class library "https://www.barcodebakery.com/en/download", select your own version to download
Recommended tutorial:thinkphp tutorial
2. Unzip and place it under "E:\phpstudy\PHPTutorial\WWW\guahao\vendor\", where the class file is all the class files, and the barcode is generated by calling the folder In the classes, the font file is the font, index.php is a function to generate barcodes with optional conditions, and is the entrance to the main program. test_1D.php is an example of generating barcodes, and test_1D.html is the corresponding page for rendering barcodes
3. We can directly use the official example (test_1D.php), copy it to where we need to use it, and then make slight changes according to our needs. Note that the path to load the third-party class library needs to be changed.
PHP code to generate barcode
setScale(2); // Resolution $code->setThickness(30); // Thickness $code->setForegroundColor($color_black); // Color of bars $code->setBackgroundColor($color_white); // Color of spaces $code->setFont($font); // Font (or 0) 0不显示文字 $text = isset($_GET['text']) ? $_GET['text'] : 'HELLO'; $code->parse($text); // Text } catch(Exception $exception) { $drawException = $exception; } /* Here is the list of the arguments 1 - Filename (empty : display on screen) 2 - Background color */ $drawing = new \BCGDrawing('', $color_white); if($drawException) { $drawing->drawException($drawException); } else { $drawing->setBarcode($code); $drawing->draw(); } // Header that says it is an image (remove it if you save the barcode to a file) header('Content-Type: image/png'); header('Content-Disposition: inline; filename="barcode.png"'); // Draw (or save) the image into PNG format. $drawing->finish(\BCGDrawing::IMG_FORMAT_PNG); } public function barcodedes() { return $this->fetch(); } } ?>
Accept Html code to render barcode
})
Of course, src is also Parameters can be carried, just change the following code
html code
'123'))}">
php code
change
$text = isset($_GET['text']) ? $_GET['text'] : 'HELLO';
to
$text = input('text'); //接收的参数
4 . If you want to save the barcode locally, just fill in the save path when instantiating "BCGDrawing"
// 文件路径 $file_dir = 'uploads/barcode/'.date('Y-m-d'); if (!file_exists($file_dir)) { mkdir($file_dir,0755,true); } $imgUrl = $file_dir.'/'.time().'.png'; $class_dir = VENDOR_PATH.'barcode/class/'; // Including all required classes require_once($class_dir.'BCGFontFile.php'); require_once($class_dir.'BCGColor.php'); require_once($class_dir.'BCGDrawing.php'); require_once($class_dir.'BCGcode39.barcode.php'); // Loading Font // 注意font和class是同一级文件夹 $font = new \BCGFontFile(VENDOR_PATH.'barcode/font/Arial.ttf', 18); // Don't forget to sanitize user inputs // $text = isset($_GET['text']) ? $_GET['text'] : 'HELLO'; // The arguments are R, G, B for color. $color_black = new \BCGColor(0, 0, 0); $color_white = new \BCGColor(255, 255, 255); $drawException = null; try { $code = new \BCGcode39(); $code->setScale(2); // Resolution $code->setThickness(30); // Thickness $code->setForegroundColor($color_black); // Color of bars $code->setBackgroundColor($color_white); // Color of spaces $code->setFont($font); // Font (or 0) $text = input('text'); //接收的参数 $text = isset($text) ? $text :'无参数'; $code->parse($text); // Text } catch(Exception $exception) { $drawException = $exception; } /* Here is the list of the arguments 1 - Filename (empty : display on screen) 2 - Background color */ // 保存到本地 （路径，颜色）路径为空则表示显示到页面上 $drawing = new \BCGDrawing($imgUrl, $color_white); if($drawException) { $drawing->drawException($drawException); } else { $drawing->setBarcode($code); $drawing->draw(); } $drawing->finish(\BCGDrawing::IMG_FORMAT_PNG);
5. After generating the barcode, how to determine whether the barcode can be used? You can save the barcode as an image locally, open the official website "https://www.onlinebarcodereader.com/", and upload the just-generated barcode. If the parsed parameters are the same as what you entered, it means the barcode can be used.
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