在CakePHP控制器中输出图像\条形码
我想在CakePHP控制器中输出由PEAR::Image_条形码生成的条形码:在CakePHP控制器中输出图像\条形码,cakephp,pear,Cakephp,Pear,我想在CakePHP控制器中输出由PEAR::Image_条形码生成的条形码: public function gen_bc($bc_text = null) { $this->autoRender = false; require_once("Image/Barcode.php"); $bc = new Image_Barcode; $bc->draw($bc_text, "Code39", "jpg"); exit(); } 但是@all
public function gen_bc($bc_text = null)
{
$this->autoRender = false;
require_once("Image/Barcode.php");
$bc = new Image_Barcode;
$bc->draw($bc_text, "Code39", "jpg");
exit();
}
但是@all没有输出。您需要捕获输出。使用ob_start()。否则,屏幕上将只显示条形码图像
require_once('Image/Barcode.php');
public function gen_bc($bc_text){
ob_start();
$img = Image_Barcode::draw( $bc_text ,'code128', 'png', false);
$cif_data = ob_get_contents ();
ob_end_clean();
}
如果出现错误,请尝试纠正错误:
require_once('Image/Barcode.php');
error_reporting(0);
public function gen_bc($bc_text){
ob_start();
$img = Image_Barcode::draw( $bc_text ,'code128', 'png', false);
$cif_data = ob_get_contents ();
ob_end_clean();
}