Php 确定excel文件mime类型

我需要确定上传文件的类型

上载

.xlsx

文件时，此代码：

 echo $_FILES['uploaded_file']['type']."<br>";  
 echo mime_content_type($_FILES['uploaded_file']['tmp_name']);

从这里我知道，

application/vnd.msexcel

不是

.xlsx

，而是

.xls

文件mime类型

那么，为什么要为

.xlsx

文件返回

mime\u content\u type（）

function

application/vnd.ms excel

？真相在哪里？

不是特别准确，而且已经被反对而赞成；虽然我个人打开文件并明确测试文件中的某些数据元素，这些数据元素可能不属于mime_magic signature details的一部分，正如您在函数页面上看到的警告一样，它已经过时了，现在被函数替换了

$finfo = new finfo(); 
$fileinfo = $finfo->file($file, FILEINFO_MIME);

安装

finfo

扩展

pecl install fileinfo

使用而不是mime\u内容\u类型（即）

关于mime类型和扩展

application/vnd.ms-excel                                          xls xlb xlt
application/vnd.ms-excel.addin.macroEnabled.12                    xlam
application/vnd.ms-excel.sheet.binary.macroEnabled.12             xlsb
application/vnd.ms-excel.sheet.macroEnabled.12                    xlsm
application/vnd.ms-excel.template.macroEnabled.12                 xltm
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet xlsx

---

（可在linux Web服务器的/etc/mime.types上找到）

这里有一个包装器，可以正确识别Microsoft Office 2007文档。它的使用、编辑和添加更多的文件扩展名/MIMEType非常简单和简单

function get_mimetype($filepath) {
    if(!preg_match('/\.[^\/\\\\]+$/',$filepath)) {
        return finfo_file(finfo_open(FILEINFO_MIME_TYPE), $filepath);
    }
    switch(strtolower(preg_replace('/^.*\./','',$filepath))) {
        // START MS Office 2007 Docs
        case 'docx':
            return 'application/vnd.openxmlformats-officedocument.wordprocessingml.document';
        case 'docm':
            return 'application/vnd.ms-word.document.macroEnabled.12';
        case 'dotx':
            return 'application/vnd.openxmlformats-officedocument.wordprocessingml.template';
        case 'dotm':
            return 'application/vnd.ms-word.template.macroEnabled.12';
        case 'xlsx':
            return 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet';
        case 'xlsm':
            return 'application/vnd.ms-excel.sheet.macroEnabled.12';
        case 'xltx':
            return 'application/vnd.openxmlformats-officedocument.spreadsheetml.template';
        case 'xltm':
            return 'application/vnd.ms-excel.template.macroEnabled.12';
        case 'xlsb':
            return 'application/vnd.ms-excel.sheet.binary.macroEnabled.12';
        case 'xlam':
            return 'application/vnd.ms-excel.addin.macroEnabled.12';
        case 'pptx':
            return 'application/vnd.openxmlformats-officedocument.presentationml.presentation';
        case 'pptm':
            return 'application/vnd.ms-powerpoint.presentation.macroEnabled.12';
        case 'ppsx':
            return 'application/vnd.openxmlformats-officedocument.presentationml.slideshow';
        case 'ppsm':
            return 'application/vnd.ms-powerpoint.slideshow.macroEnabled.12';
        case 'potx':
            return 'application/vnd.openxmlformats-officedocument.presentationml.template';
        case 'potm':
            return 'application/vnd.ms-powerpoint.template.macroEnabled.12';
        case 'ppam':
            return 'application/vnd.ms-powerpoint.addin.macroEnabled.12';
        case 'sldx':
            return 'application/vnd.openxmlformats-officedocument.presentationml.slide';
        case 'sldm':
            return 'application/vnd.ms-powerpoint.slide.macroEnabled.12';
        case 'one':
            return 'application/msonenote';
        case 'onetoc2':
            return 'application/msonenote';
        case 'onetmp':
            return 'application/msonenote';
        case 'onepkg':
            return 'application/msonenote';
        case 'thmx':
            return 'application/vnd.ms-officetheme';
            //END MS Office 2007 Docs

    }
    return finfo_file(finfo_open(FILEINFO_MIME_TYPE), $filepath);
}

function get_mimetype($filepath) {
    if(!preg_match('/\.[^\/\\\\]+$/',$filepath)) {
        return finfo_file(finfo_open(FILEINFO_MIME_TYPE), $filepath);
    }
    switch(strtolower(preg_replace('/^.*\./','',$filepath))) {
        // START MS Office 2007 Docs
        case 'docx':
            return 'application/vnd.openxmlformats-officedocument.wordprocessingml.document';
        case 'docm':
            return 'application/vnd.ms-word.document.macroEnabled.12';
        case 'dotx':
            return 'application/vnd.openxmlformats-officedocument.wordprocessingml.template';
        case 'dotm':
            return 'application/vnd.ms-word.template.macroEnabled.12';
        case 'xlsx':
            return 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet';
        case 'xlsm':
            return 'application/vnd.ms-excel.sheet.macroEnabled.12';
        case 'xltx':
            return 'application/vnd.openxmlformats-officedocument.spreadsheetml.template';
        case 'xltm':
            return 'application/vnd.ms-excel.template.macroEnabled.12';
        case 'xlsb':
            return 'application/vnd.ms-excel.sheet.binary.macroEnabled.12';
        case 'xlam':
            return 'application/vnd.ms-excel.addin.macroEnabled.12';
        case 'pptx':
            return 'application/vnd.openxmlformats-officedocument.presentationml.presentation';
        case 'pptm':
            return 'application/vnd.ms-powerpoint.presentation.macroEnabled.12';
        case 'ppsx':
            return 'application/vnd.openxmlformats-officedocument.presentationml.slideshow';
        case 'ppsm':
            return 'application/vnd.ms-powerpoint.slideshow.macroEnabled.12';
        case 'potx':
            return 'application/vnd.openxmlformats-officedocument.presentationml.template';
        case 'potm':
            return 'application/vnd.ms-powerpoint.template.macroEnabled.12';
        case 'ppam':
            return 'application/vnd.ms-powerpoint.addin.macroEnabled.12';
        case 'sldx':
            return 'application/vnd.openxmlformats-officedocument.presentationml.slide';
        case 'sldm':
            return 'application/vnd.ms-powerpoint.slide.macroEnabled.12';
        case 'one':
            return 'application/msonenote';
        case 'onetoc2':
            return 'application/msonenote';
        case 'onetmp':
            return 'application/msonenote';
        case 'onepkg':
            return 'application/msonenote';
        case 'thmx':
            return 'application/vnd.ms-officetheme';
            //END MS Office 2007 Docs

    }
    return finfo_file(finfo_open(FILEINFO_MIME_TYPE), $filepath);
}