如何使用 ZipArchive 保存 PHP 从 DOCX 获取的图像

Question

简要说明：我有一个 Docx 文件。我在 PHP 中完成了一个简单的代码，它提取该文件中的图像并将其显示在页面上。

我想要实现的目标：我希望这些图像应该以相同的名称和格式保存在我的 php 文件旁边。

我的文件夹有sample.docx（其中有图像），extract.php（从 docx 中提取图像）和display.php

下面是代码extract.php

<?php    

/*Name of the document file*/

$document = 'sample.docx';

/*Function to extract images*/ 

function readZippedImages($filename) {

    /*Create a new ZIP archive object*/

    $zip = new ZipArchive;

    /*Open the received archive file*/

    if (true === $zip->open($filename)) {

        for ($i=0; $i<$zip->numFiles;$i++) {

            /*Loop via all the files to check for image files*/

            $zip_element = $zip->statIndex($i);                

            /*Check for images*/

            if(preg_match("([^\s]+(\.(?i)(jpg|jpeg|png|gif|bmp))$)",$zip_element['name'])) {    

                /*Display images if present by using display.php*/

                echo "<image src='display.php?filename=".$filename."&index=".$i."' /><hr />";

            }

        }

    }

}

readZippedImages($document);

?>

display.php

<?php

/*Tell the browser that we want to display an image*/

header('Content-Type: image/jpeg');        

/*Create a new ZIP archive object*/

$zip = new ZipArchive;

/*Open the received archive file*/

if (true === $zip->open($_GET['filename'])) {    

/*Get the content of the specified index of ZIP archive*/

echo $zip->getFromIndex($_GET['index']);

}

$zip->close();

?>

我怎样才能做到这一点？

Answer 1

我不确定您是否需要像这样多次打开 zip 存档 - 特别是当另一个实例已经打开但我很想尝试以下内容时 - 我应该强调它完全未经测试。测试后更新：如果您这样做，则无需使用display.php- 似乎在不同的.docx文件上工作正常。返回的数据$zip->getFromIndex产生原始图像数据（所以我发现），因此由于长度原因，无法将其传递到查询字符串中。我试图避免不必要地打开/关闭 zip 存档，因此下面的方法将原始数据添加到输出数组，然后使用这个内联的 base64 编码数据显示图像。<?php&nbsp; &nbsp;&nbsp;&nbsp; &nbsp; #extract.php&nbsp; &nbsp; $document = 'sample.docx';&nbsp; &nbsp; function readZippedImages($filename) {&nbsp; &nbsp; &nbsp; &nbsp; $paths=[];&nbsp; &nbsp; &nbsp; &nbsp; $zip = new ZipArchive;&nbsp; &nbsp; &nbsp; &nbsp; if( true === $zip->open( $filename ) ) {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; for( $i=0; $i < $zip->numFiles;$i++ ) {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; $zip_element = $zip->statIndex( $i );&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; if( preg_match( "([^\s]+(\.(?i)(jpg|jpeg|png|gif|bmp))$)", $zip_element['name'] ) ) {&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; $paths[ $zip_element['name'] ]=base64_encode( $zip->getFromIndex( $i ) );&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp; &nbsp; &nbsp; }&nbsp; &nbsp; &nbsp; &nbsp; $zip->close();&nbsp; &nbsp; &nbsp; &nbsp; return $paths;&nbsp; &nbsp; }&nbsp; &nbsp; $paths=readZippedImages( $document );&nbsp; &nbsp; /* to display & save the images */&nbsp; &nbsp; foreach( $paths as $name => $data ){&nbsp; &nbsp; &nbsp; &nbsp; $filepath=__DIR__ . '/' . $name;&nbsp; &nbsp; &nbsp; &nbsp; $dirpath=pathinfo( $filepath, PATHINFO_DIRNAME );&nbsp; &nbsp; &nbsp; &nbsp; $ext=pathinfo( $name, PATHINFO_EXTENSION );&nbsp; &nbsp; &nbsp; &nbsp; if( !file_exists( $dirpath ) )mkdir( $dirpath,0777, true );&nbsp; &nbsp; &nbsp; &nbsp; if( !file_exists( $filepath ) )file_put_contents( $filepath, base64_decode( $data ) );&nbsp; &nbsp; &nbsp; &nbsp; printf('<img src="data:image/%s;base64, %s" />', $ext, $data );&nbsp; &nbsp; }?>