如何批量替换相对地址为绝对地址？PHP

<span>php
</span><span>//</span><span>需要替换的关键字</span>
<span>$GLOBALS</span>["patterns"] = <span>array</span><span>(
    </span>"/#BASE_URL#/"<span>
);

</span><span>//</span><span>替换后的内容，和上面的匹配规则一一对应</span>
<span>$GLOBALS</span>["replacements"] = <span>array</span><span>(
   </span>"http://api.map.baidu.com/lbsapi/cloud/"
    <span>//</span><span>"http://172.22.168.178/lbsapi/"
    //"http://dev.baidu.com/wiki/static/map/cloud/"</span>
<span>);

</span><span>/*</span><span>*
 * 操纵文件类
 * 
 * 例子：
 * FileUtil::copyDir('b','d/e');                    测试复制文件夹 建立一个d/e文件夹，把b文件夹下的内容复制进去
 * FileUtil::copyFile('b/1/2/3.exe','b/b/3.exe'); 测试复制文件        建立一个b/b文件夹，并把b/1/2文件夹中的3.exe文件复制进去
 * FileUtil::createDir('a/1/2/3');                    测试建立文件夹 建一个a/1/2/3文件夹
 * FileUtil::unlinkFile('b/d/3.exe');             测试删除文件        删除b/d/3.exe文件
 </span><span>*/</span>
<span>class</span><span> FileUtil {
    </span><span>/*</span><span>*
     * 建立文件夹
     *
     * @param string $aimUrl
     * @return viod
     </span><span>*/</span>
    <span>function</span> createDir(<span>$aimUrl</span><span>) {
        </span><span>$aimUrl</span> = <span>str_replace</span>('', '/', <span>$aimUrl</span><span>);
        </span><span>$aimDir</span> = ''<span>;
        </span><span>$arr</span> = <span>explode</span>('/', <span>$aimUrl</span><span>);
        </span><span>foreach</span> (<span>$arr</span> <span>as</span> <span>$str</span><span>) {
            </span><span>$aimDir</span> .= <span>$str</span> . '/'<span>;
            </span><span>if</span> (!<span>file_exists</span>(<span>$aimDir</span><span>)) {
                </span><span>mkdir</span>(<span>$aimDir</span><span>);
            }
        }
    }

    </span><span>/*</span><span>*
     * 删除文件
     *
     * @param string $aimUrl
     * @return boolean
     </span><span>*/</span>
    <span>function</span> unlinkFile(<span>$aimUrl</span><span>) {
        </span><span>if</span> (<span>file_exists</span>(<span>$aimUrl</span><span>)) {
            </span><span>unlink</span>(<span>$aimUrl</span><span>);
            </span><span>return</span> <span>true</span><span>;
        } </span><span>else</span><span> {
            </span><span>return</span> <span>false</span><span>;
        }
    }
    
    </span><span>/*</span><span>*
     * 复制文件夹
     *
     * @param string $oldDir
     * @param string $aimDir
     * @param boolean $overWrite 该参数控制是否覆盖原文件
     * @return boolean
     </span><span>*/</span>
    <span>function</span> copyDir(<span>$oldDir</span>, <span>$aimDir</span>, <span>$overWrite</span> = <span>false</span><span>) {
        </span><span>$aimDir</span> = <span>str_replace</span>('', '/', <span>$aimDir</span><span>);
        </span><span>$aimDir</span> = <span>substr</span>(<span>$aimDir</span>, -1) == '/' ? <span>$aimDir</span> : <span>$aimDir</span>.'/'<span>;
        </span><span>$oldDir</span> = <span>str_replace</span>('', '/', <span>$oldDir</span><span>);
        </span><span>$oldDir</span> = <span>substr</span>(<span>$oldDir</span>, -1) == '/' ? <span>$oldDir</span> : <span>$oldDir</span>.'/'<span>;
        </span><span>if</span> (!<span>is_dir</span>(<span>$oldDir</span><span>)) {
            </span><span>return</span> <span>false</span><span>;
        }
        </span><span>if</span> (!<span>file_exists</span>(<span>$aimDir</span><span>)) {
            FileUtil</span>::createDir(<span>$aimDir</span><span>);
        }
        </span><span>$dirHandle</span> = <span>opendir</span>(<span>$oldDir</span><span>);
        </span><span>while</span>(<span>false</span> !== (<span>$file</span> = <span>readdir</span>(<span>$dirHandle</span><span>))) {
            </span><span>if</span> (<span>$file</span> == '.' || <span>$file</span> == '..'<span>) {
                </span><span>continue</span><span>;
            }
            </span><span>if</span> (!<span>is_dir</span>(<span>$oldDir</span> . <span>$file</span><span>)) {
                FileUtil</span>::copyFile(<span>$oldDir</span> . <span>$file</span>, <span>$aimDir</span> . <span>$file</span>, <span>$overWrite</span><span>);
            } </span><span>else</span><span> {
                FileUtil</span>::copyDir(<span>$oldDir</span> . <span>$file</span>, <span>$aimDir</span> . <span>$file</span>, <span>$overWrite</span><span>);
            }
        }
        </span><span>return</span> <span>closedir</span>(<span>$dirHandle</span><span>);
    }
    </span><span>/*</span><span>*
     * 复制文件
     *
     * @param string $fileUrl
     * @param string $aimUrl
     * @param boolean $overWrite 该参数控制是否覆盖原文件
     * @return boolean
     </span><span>*/</span>
    <span>function</span> copyFile(<span>$fileUrl</span>, <span>$aimUrl</span>, <span>$overWrite</span> = <span>false</span><span>) {
        </span><span>if</span> (!<span>file_exists</span>(<span>$fileUrl</span><span>)) {
            </span><span>return</span> <span>false</span><span>;
        }
        </span><span>if</span> (<span>file_exists</span>(<span>$aimUrl</span>) && <span>$overWrite</span> == <span>false</span><span>) {
            </span><span>return</span> <span>false</span><span>;
        } </span><span>elseif</span> (<span>file_exists</span>(<span>$aimUrl</span>) && <span>$overWrite</span> == <span>true</span><span>) {
            FileUtil</span>::unlinkFile(<span>$aimUrl</span><span>);
        }
        </span><span>$aimDir</span> = <span>dirname</span>(<span>$aimUrl</span><span>);
        FileUtil</span>::createDir(<span>$aimDir</span><span>);
        </span><span>copy</span>(<span>$fileUrl</span>, <span>$aimUrl</span><span>);
        </span><span>//</span><span>替换变量</span>
        <span>$apiFilePointer</span> = <span>fopen</span>(<span>$aimUrl</span>, 'r'<span>);
        </span><span>$apiFileContent</span> = <span>fread</span>(<span>$apiFilePointer</span>, <span>filesize</span>(<span>$aimUrl</span><span>));
        </span><span>//</span><span>只在js、html、css文件进行替换</span>
        <span>if</span> (<span>preg_match</span>('/(\.js|\.html|\.css|\.htm)$/', <span>$aimUrl</span><span>)) {
            </span><span>$apiFileContent</span> = <span>preg_replace</span>(<span>$GLOBALS</span>["patterns"], <span>$GLOBALS</span>["replacements"], <span>$apiFileContent</span><span>);
        }
        </span><span>fclose</span>(<span>$apiFilePointer</span><span>);
        </span><span>echo</span> <span>$aimUrl</span>."\r\n"<span>;
        </span><span>$apiFilePointer</span> = <span>fopen</span>(<span>$aimUrl</span>, 'w+'<span>);
        </span><span>fwrite</span>(<span>$apiFilePointer</span>, <span>$apiFileContent</span><span>);
        </span><span>fclose</span>(<span>$apiFilePointer</span><span>);
        </span><span>//</span><span>替换变量</span>
        <span>return</span> <span>true</span><span>;
    }
}

FileUtil</span>::copyDir("resource","cloud",<span>true</span><span>);

</span>?>

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