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php二维码生成,php
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php二维码生成,php

Jun 13, 2016 am 08:53 AM
php QR code

php二维码生成,php

本文介绍两种使用 php 生成二维码的方法。
(1)利用google生成二维码的开放接口,代码如下:

/** 
 * google api 二维码生成【QRcode可以存储最多4296个字母数字类型的任意文本,具体可以查看二维码数据格式】 
 * @param string $data 二维码包含的信息,可以是数字、字符、二进制信息、汉字。不能混合数据类型,数据必须经过UTF-8 URL-encoded.如果需要传递的信息超过2K个字节,请使用POST方式 
 * @param int $widhtHeight 生成二维码的尺寸设置 
 * @param string $EC_level 可选纠错级别,QR码支持四个等级纠错,用来恢复丢失的、读错的、模糊的、数据。 
 *       L-默认:可以识别已损失的7%的数据 
 *       M-可以识别已损失15%的数据 
 *       Q-可以识别已损失25%的数据 
 *       H-可以识别已损失30%的数据 
 * @param int $margin 生成的二维码离图片边框的距离 
 */ 
function generateQRfromGoogle($data,$widhtHeight='150',$EC_level='L',$margin='0'){ 
 $url=urlencode($data); 
 echo '<img  src="/static/imghw/default1.png"  data-src="http://chart.apis.google.com/chart&#63;chs='.$widhtHeight.'x'.$widhtHeight.'&cht=qr&chld='.$EC_level.'|'.$margin.'&chl='.$data.'"  class="lazy".$widhtHeight.'x'.$widhtHeight.'&cht=qr&chld='.$EC_level.'|'.$margin.'&chl='.$data.'" widhtHeight="'.$widhtHeight.'" widhtHeight="'.$widhtHeight.'"/ alt="php二维码生成,php" >'; 
} 

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使用方法:

$data='版权所有:http://www.bkjia.com'; 
generateQRfromGoogle($data); 
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post方法实现请求google api 生成二维码的方式:

function qrcode($width,$height,$string){ 
 $post_data=array(); 
 $post_data['cht']='qr'; 
 $post_data['chs']=$width."x".$height; 
 $post_data['chl']=$string; 
 $post_data['choe']="UTF-8"; 
 $url="http://chart.apis.google.com/chart"; 
 $data_Array=array(); 
 foreach($post_data as $key=>$value){ 
  $data_Array[]=$key.'='.$value; 
 } 
 $data=implode("&",$data_Array); 
 $ch=curl_init(); 
 curl_setopt($ch, CURLOPT_POST, 1); 
 curl_setopt($ch, CURLOPT_HEADER, 0); 
 curl_setopt($ch, CURLOPT_URL, $url);  
 curl_setopt($ch, CURLOPT_POSTFIELDS,$data); 
 curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); 
 $result=curl_exec($ch); 
 //echo "<img  src =\"data:image/png;base64,".base64_encode($result)."\"  alt="php二维码生成,php" >"; 注意,不写header的写法 
 return $result; 
} 
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使用方法:

header("Content-type:image/png"); 
$width=300; 
$height=300; 
$data='版权所有:http://www.bkjia.com';
echo qrcode($width,$height,$data); 
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当然生成的图片同上面是一样的。

(2)使用php QR Code类库生成二维码
注意使用该类库必须首先下载类库包,下载地址:
地址:http://phpqrcode.sourceforge.net/
下载下来的压缩包里面有很多示例,可以自行研究,下面给出一个简单的使用案例(具体参数的意思和上面大同小异):

<&#63;php 
include "./phpqrcode.php"; 
$data='版权所有:http://www.bkjia.com'; 
$errorCorrectionLevel="L"; 
$matrixPointSize="4"; 
QRcode::png($data,false,$errorCorrectionLevel,$matrixPointSize);
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以上所述就是本文的全部内容了,希望对大家熟练掌握php生产二维码能够有所帮助。

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