PHP怎么样将图像转换为base64编码格式
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<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">base64_encode()函数是PHP中的一个内置函数，用于将任何数据转换为base64编码。为了将图像转换成base64编码，<span style="color: black;">首要</span>需要获取文件的内容，这<span style="color: black;">能够</span><span style="color: black;">经过</span>PHP的file_get_contents()函数来完成。<span style="color: black;">而后</span>将这个原始数据传递给base64_encode()函数进行编码。</p>
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<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">所需的函数:</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">base64_encode()函数</strong>是PHP中的一个内置函数，用于<span style="color: black;">运用</span>MIME base64对数据进行编码。MIME(多用途Internet邮件扩展)base64用于在base64中对字符串进行编码。base64_encoded数据比原始数据多占用33%的空间。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">file_get_contents()函数</strong><span style="color: black;">亦</span>是PHP中的一个内置函数，用于将文件读入字符串。该函数<span style="color: black;">运用</span>服务器支持的内存映射技术，从而<span style="color: black;">加强</span>了性能，使其<span style="color: black;">作为</span>读取文件内容的首选<span style="color: black;">办法</span>。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><strong style="color: blue;">输入<span style="color: black;">照片</span>如下：</strong></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_jpg/Lhm5kkN9JXMZt7AOTNDxOFRJh9H70CDJM68icAjn5X3CnHSHozhuP4SngO72Rk4woWAHdXP4YBic9dHFQ9VojToA/640?wx_fmt=jpeg&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p><strong style="color: blue;">PHP代码程序如下：</strong>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><?php</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">// 获取图像并转换为字符串</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">$img = file_get_contents(img/001.jpg);</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">// 将图像字符串数据编码为base64</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">$data = base64_encode($img);</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">// <span style="color: black;">表示</span>输出</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">echo $data;</p>输出：<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">/9j/4RUURXhpZgAASUkqAAgAAAAMAAABAwABAAAAgAIAAAEBAwABAAAAkAEAAAIBAwADAAAAng</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">AAAAYBAwABAAAAAgAAABIBAwABAAAAAQAAABUBAwABAAAAAwAAABoBBQABAAAApAAAABsBBQAB</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">AAAArAAAACgBAwABAAAAAgAAADEBAgAeAAAAtAAAADIBAgAUAAAA0gAAAGmHBAABAAAA6AAAACA</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">...</p>
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<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">本篇<span style="color: black;">文案</span><span style="color: black;">便是</span>关于PHP<span style="color: black;">怎样</span>将图像转换为base64编码格式的<span style="color: black;">办法</span>介绍，简单易懂，<span style="color: black;">期盼</span>对需要的<span style="color: black;">伴侣</span>有所<span style="color: black;">帮忙</span>！</p>
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