18c05-1.php

来自「介绍PHP5的给类型函数应用」· PHP 代码 · 共 82 行

<style>
div {
    text-align: center;
    border: 2px solid black;
    padding: 5px;
    margin: 10px;
}
ul {
    font-size: 9px;
    text-align: left;
}
</style>
<?php
// Define a path - We are assuming that this will be a relative path working
//  both in the filesystem, and through the web for links:
$path = "photos/";

// Open the directory 
$do = dir($path);

// Loop through it, looking for any/all JPG files:
while (($file = $do->read()) !== false) {
    // Parse this for the extension
    $info = pathinfo($path . $file);
    
    // Continue only if this is a Jpeg
    if (strtolower($info['extension']) == 'jpg') {
        // We found one!  Start a DIV to display & link to this:
        echo "<div><a href=\"{$path}{$file}\">";
        
        // Let's try to grab the graphic, and if so, display it.
           if ($thumb = exif_thumbnail($path . $file, $width, 
                   $height, $type)) {
            // We got one.  Therefore first figure out the mime type of it
            $mime = image_type_to_mime_type($type);
            
            // Now we are going to use an HTML trick, and embed the graphic
            // directly into the webpage as base64 encoded data
            $encoded = base64_encode($thumb);
            echo "<img src=\"data:{$mime};base64,{$encoded}\" /><br />";
        }
        
        // In either case, place the name of the file as part of the link:
        echo $file, "</a>\n";
        
        // Now let's read in all the Exif data:
        if ($exif = exif_read_data($path . $file)) {
            // We got it.  So start an unordered list to display it all
            echo "<ul>\n";
            
            // We need to loop through each 'section' of this data
            foreach ($exif as $section => $sectiondata) {
                // If sectiondata is an array, start a new list:
                if (is_array($sectiondata)) {
                    // Output the section name, and start a new list
                    echo "<li>{$section}<ul>\n";
                
                    // Loop through this section now
                    foreach ($sectiondata as $name => $data) {
                        // Output this line of data
                        echo "<li>{$name} = ", htmlspecialchars($data), 
                            "</li>\n";
                    }
                
                    // Close our section off
                    echo "</ul></li>\n";
                } else {
                    // It's not really a section, its got data.  Echo it 
                    echo "<li>{$section} = ", 
                        htmlspecialchars($sectiondata), "</li>\n";
                }
            }
            
            // Close the entire list off
            echo "</ul>\n";
        }
        
        // Close the div tag
        echo "</div>\n";
    }
}
?>