There is a problem with the final call of php to implement image verification code?-PHP Chinese Network Q&A

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There is a problem with the final call of php to implement image verification code?

罗梅光 2022-05-05 01:22:00

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According to php how to implement image verification code content guide encapsulation verification code class capt 0.png capt1 0.png

罗梅光

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autoload2022-05-05 11:05:56 4 floor

//设置字体的路径 
$font='./Daft-Font-1.ttf';
 //添加内容
  $content="hello word！"; 
  //设置字体的颜色和透明度 
  $col=imagecolorallocatealpha($image,255,255,5,1); 
  //写入文字 
  imagettftext($image,20,0,60,60,$col,realpath($font),$content);

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autoload2022-05-05 11:04:23 3 floor

Use realpath() for the font path to convert the relative path to an absolute path

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reply Thanks for the reply, sir. The image is generated now, but it cannot be displayed on the page. It is only displayed on the network. Try ob_clean(); later.

罗梅光 author 2022-05-05 12:48:07

reply Boss, I tried ob_clean(); but it didn’t work either. The image is now generated, but it cannot be displayed on the page. It is only displayed on the network.

罗梅光 author 2022-05-05 13:38:13

reply How to separate the front-end and back-end to display the returned image on the page img.

罗梅光 author 2022-05-05 13:38:59

reply Solved, thank you php.cn boss. ob_start(); imagepng($img); $image_data = ob_get_contents(); ob_end_clean(); $base64 = chunk_split(base64_encode($image_data)); return 'data:image/png;base64,' . $base64;

罗梅光 author 2022-05-05 14:20:40