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PHP 读取远程图片并保存在本地

<?php
/**
 * Created by JetBrains PhpStorm.
 * User: Max
 * Date: 07/02/13
 * Time: 11:44 AM
 * 本程序假设读取的远程图片都是 jpg 格式;同时假设不存在相同文件名的情况。
 */

$target = $_GET['pic'];                    //获取远程图片 URL
$filename = basename($target);             //获取远程图片的文件名
$filename_full = "./remote_pic/$filename"; //设定保存远程图片的完整路径

if ( file_exists($filename_full) ) {
    //如果该文件已经存在于本地,则读取其内容
    $content = file_get_contents($filename_full);
} else {
    //如果该文件并不存在,则读取其内容并保存在本地以供将来调用
    $content = file_get_contents($target);

    $fp = fopen("./remote_pic/$filename", 'w+');
    fwrite($fp, $content);
    fclose($fp);
}

header('Content-Type: image/jpeg');
echo file_get_contents($filename_full);
https://snipt.net/embed/44725440304f55f47f310e9ff6890fc8/
/raw/44725440304f55f47f310e9ff6890fc8/
44725440304f55f47f310e9ff6890fc8
php
PHP
27
2019-06-19T03:36:45
True
False
False
/api/public/snipt/55371/
php-23
<table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><a href="#L-1"> 1</a> <a href="#L-2"> 2</a> <a href="#L-3"> 3</a> <a href="#L-4"> 4</a> <a href="#L-5"> 5</a> <a href="#L-6"> 6</a> <a href="#L-7"> 7</a> <a href="#L-8"> 8</a> <a href="#L-9"> 9</a> <a href="#L-10">10</a> <a href="#L-11">11</a> <a href="#L-12">12</a> <a href="#L-13">13</a> <a href="#L-14">14</a> <a href="#L-15">15</a> <a href="#L-16">16</a> <a href="#L-17">17</a> <a href="#L-18">18</a> <a href="#L-19">19</a> <a href="#L-20">20</a> <a href="#L-21">21</a> <a href="#L-22">22</a> <a href="#L-23">23</a> <a href="#L-24">24</a> <a href="#L-25">25</a> <a href="#L-26">26</a> <a href="#L-27">27</a></pre></div></td><td class="code"><div class="highlight"><pre><span></span><span id="L-1"><a name="L-1"></a><span class="cp">&lt;?php</span> </span><span id="L-2"><a name="L-2"></a><span class="sd">/**</span> </span><span id="L-3"><a name="L-3"></a><span class="sd"> * Created by JetBrains PhpStorm.</span> </span><span id="L-4"><a name="L-4"></a><span class="sd"> * User: Max</span> </span><span id="L-5"><a name="L-5"></a><span class="sd"> * Date: 07/02/13</span> </span><span id="L-6"><a name="L-6"></a><span class="sd"> * Time: 11:44 AM</span> </span><span id="L-7"><a name="L-7"></a><span class="sd"> * 本程序假设读取的远程图片都是 jpg 格式;同时假设不存在相同文件名的情况。</span> </span><span id="L-8"><a name="L-8"></a><span class="sd"> */</span> </span><span id="L-9"><a name="L-9"></a> </span><span id="L-10"><a name="L-10"></a><span class="nv">$target</span> <span class="o">=</span> <span class="nv">$_GET</span><span class="p">[</span><span class="s1">&#39;pic&#39;</span><span class="p">];</span> <span class="c1">//获取远程图片 URL</span> </span><span id="L-11"><a name="L-11"></a><span class="nv">$filename</span> <span class="o">=</span> <span class="nb">basename</span><span class="p">(</span><span class="nv">$target</span><span class="p">);</span> <span class="c1">//获取远程图片的文件名</span> </span><span id="L-12"><a name="L-12"></a><span class="nv">$filename_full</span> <span class="o">=</span> <span class="s2">&quot;./remote_pic/</span><span class="si">$filename</span><span class="s2">&quot;</span><span class="p">;</span> <span class="c1">//设定保存远程图片的完整路径</span> </span><span id="L-13"><a name="L-13"></a> </span><span id="L-14"><a name="L-14"></a><span class="k">if</span> <span class="p">(</span> <span class="nb">file_exists</span><span class="p">(</span><span class="nv">$filename_full</span><span class="p">)</span> <span class="p">)</span> <span class="p">{</span> </span><span id="L-15"><a name="L-15"></a> <span class="c1">//如果该文件已经存在于本地,则读取其内容</span> </span><span id="L-16"><a name="L-16"></a> <span class="nv">$content</span> <span class="o">=</span> <span class="nb">file_get_contents</span><span class="p">(</span><span class="nv">$filename_full</span><span class="p">);</span> </span><span id="L-17"><a name="L-17"></a><span class="p">}</span> <span class="k">else</span> <span class="p">{</span> </span><span id="L-18"><a name="L-18"></a> <span class="c1">//如果该文件并不存在,则读取其内容并保存在本地以供将来调用</span> </span><span id="L-19"><a name="L-19"></a> <span class="nv">$content</span> <span class="o">=</span> <span class="nb">file_get_contents</span><span class="p">(</span><span class="nv">$target</span><span class="p">);</span> </span><span id="L-20"><a name="L-20"></a> </span><span id="L-21"><a name="L-21"></a> <span class="nv">$fp</span> <span class="o">=</span> <span class="nb">fopen</span><span class="p">(</span><span class="s2">&quot;./remote_pic/</span><span class="si">$filename</span><span class="s2">&quot;</span><span class="p">,</span> <span class="s1">&#39;w+&#39;</span><span class="p">);</span> </span><span id="L-22"><a name="L-22"></a> <span class="nb">fwrite</span><span class="p">(</span><span class="nv">$fp</span><span class="p">,</span> <span class="nv">$content</span><span class="p">);</span> </span><span id="L-23"><a name="L-23"></a> <span class="nb">fclose</span><span class="p">(</span><span class="nv">$fp</span><span class="p">);</span> </span><span id="L-24"><a name="L-24"></a><span class="p">}</span> </span><span id="L-25"><a name="L-25"></a> </span><span id="L-26"><a name="L-26"></a><span class="nb">header</span><span class="p">(</span><span class="s1">&#39;Content-Type: image/jpeg&#39;</span><span class="p">);</span> </span><span id="L-27"><a name="L-27"></a><span class="k">echo</span> <span class="nb">file_get_contents</span><span class="p">(</span><span class="nv">$filename_full</span><span class="p">);</span> </span></pre></div> </td></tr></table>
php