PHP online generated QR code code example (google api)-PHP Tutorial-php.cn

PHP online generated QR code code example (google api)

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Release： 2023-03-13 20:12:02

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QR code is also called QR Code. QR stands for Quick Response. It is a very popular coding method on mobile devices in recent years. It is better than the traditional Bar Code. Barcodes can store more information and represent more data types.

Two-dimensional bar code/QR code (2-dimensional bar code) is a black and white graphic that uses a specific geometric figure distributed on a plane (in a two-dimensional direction) according to certain rules to record data symbol information. ; In coding, the concept of "0" and "1" bit streams that form the basis of computer internal logic is cleverly used, and several geometric shapes corresponding to binary are used to represent text numerical information, through image input equipment or photoelectric scanning The equipment automatically reads to realize automatic processing of information: it has some common features of barcode technology: each code system has its own specific character set; each character occupies a certain width; it has certain verification functions, etc. At the same time, it also has the function of automatically identifying different lines of information and processing graphic rotation change points.

This article mainly introduces the example of generating QR code online through Google's API to generate QR code online. The code is as follows:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> 
<title>二维码生成-www.jbxue.com</title> 
<SCRIPT LANGUAGE=JavaScript> 
function post(){ 
if(document.getElementById(&#39;content&#39;).value==&#39;&#39;){alert(&#39;内容不能为空!&#39;);document.getElementById(&#39;content&#39;).focus();return false;}
if(ckregdatapost()==false){return false;} 
} 
</SCRIPT> 
</head> 
<body> 
<style> 
body{text-align:center;background:#f5f5f5;line-height:22px;font-size:14px;color:#888;} 
.newcrop{margin:10;} 
.er{width:700px;margin:0px auto;border:1px solid gray} 
span{background:#645;color:#fff} 
body form {text-align:center;padding: 3px 6px 3px 6px;} 
input.txt{color: #00008B;background-color: #ADD8E6;border: 1px inset #00008B;width: 200px;} 
input.btn {color: #00008B;background-color: #ADD8E6;border: 1px outset #00008B;padding: 2px 4px 2px 4px;} 
input.smallInput{border:1 solid black;FONT-SIZE: 9pt; FONT-STYLE: normal; FONT-VARIANT: normal; FONT-WEIGHT: normal; HEIGHT: 18px; LINE-HEIGHT: normal} 
</style> 
<body class="newcrop"><p class="er"> 
<?php 
$content=$_GET[&#39;content&#39;]; 
$width=$_GET[&#39;width&#39;]?$_GET[&#39;width&#39;]:300; 
$height=$_GET[&#39;height&#39;]?$_GET[&#39;height&#39;]:300; 
if($content){ 
echo "你输入的文字是: <span>$content </span><BR />"; 
echo "你选择的宽度是: <span>$width </span><BR />"; 
echo "你选择的高度是: <span>$height </span><BR /> "; 
echo "生成的二维码图像是：<BR /> "; 
$wen = urlencode(mb_convert_encoding($content, &#39;utf-8&#39;, &#39;gb2312&#39;)).""; 
echo "<img id=qrcode_img src=https://chart.googleapis.com/chart?cht=qr&chld=H&chs={$width}x{$height}&chl={$wen} /><br /> 
图片地址:<a href=&#39;https://chart.googleapis.com/chart?cht=qr&chld=H&chs={$width}x{$height}&chl={$wen}&#39; target=&#39;_blank&#39;>https://chart.googleapis.com/chart?cht=qr&chld=H&chs={$width}x{$height}&chl={$wen}</a><br /> 
复制发给你的朋友。 <a href=&#39;javascript:history.go(-1);&#39;>返回上一页</a>"; 
}else{ 
?> （脚本学堂 编辑整理 www.jbxue.com）
<form action="" method="get" onsubmit="return post();"> 
<h1> 
二维码生成工具</h1> 
<p>width:<select name="width"> 
<option value="100">100</option> 
<option value="200">200</option> 
<option value="300" Selected>300</option> 
<option value="400">400</option> 
<option value="500">500</option> 
</select> 
height: <select name="height"> 
<option value="100">100</option> 
<option value="200">200</option> 
<option value="300" Selected>300</option> 
<option value="400">400</option> 
<option value="500">500</option> 
</select></p> 
输入网址或者文字:<br /> 
<textarea rows="5" cols="30" name="content" id="content" ></textarea> 
<br /><br /> 
<input type="submit" value="生成图片" /> <INPUT TYPE="RESET" VALUE="重新填写"> 
<br /> 
</form><? }?> 
<p></body></html>

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