在PHP中使用opendir（）按字母顺序排序和显示目录列表

Question

php noob在这里-我将这个脚本拼凑在一起，以显示带有opendir的文件夹中的图像列表，但是我无法弄清楚如何（或在哪里）按字母顺序对数组进行排序

<?php

// opens images folder
if ($handle = opendir('Images')) {
while (false !== ($file = readdir($handle))) {

// strips files extensions  
$crap   = array(".jpg", ".jpeg", ".JPG", ".JPEG", ".png", ".PNG", ".gif", ".GIF", ".bmp", ".BMP", "_", "-");

$newstring = str_replace($crap, " ", $file );

//asort($file, SORT_NUMERIC); - doesnt work :(

// hides folders, writes out ul of images and thumbnails from two folders

    if ($file != "." && $file != ".." && $file != "index.php" && $file != "Thumbnails") {
    echo "<li><a href=\"Images/$file\" class=\"thickbox\" rel=\"gallery\" title=\"$newstring\"><img src=\"Images/Thumbnails/$file\" alt=\"$newstring\" width=\"300\"  </a></li>\n";}
}
closedir($handle);
}

?>

任何建议或指针将不胜感激！

Answer 1

您需要先将文件读入数组，然后才能对它们进行排序。这个怎么样？

<?php
$dirFiles = array();
// opens images folder
if ($handle = opendir('Images')) {
    while (false !== ($file = readdir($handle))) {

        // strips files extensions      
        $crap   = array(".jpg", ".jpeg", ".JPG", ".JPEG", ".png", ".PNG", ".gif", ".GIF", ".bmp", ".BMP", "_", "-");

        $newstring = str_replace($crap, " ", $file );

        //asort($file, SORT_NUMERIC); - doesnt work :(

        // hides folders, writes out ul of images and thumbnails from two folders

        if ($file != "." && $file != ".." && $file != "index.php" && $file != "Thumbnails") {
            $dirFiles[] = $file;
        }
    }
    closedir($handle);
}

sort($dirFiles);
foreach($dirFiles as $file)
{
    echo "<li><a href=\"Images/$file\" class=\"thickbox\" rel=\"gallery\" title=\"$newstring\"><img src=\"Images/Thumbnails/$file\" alt=\"$newstring\" width=\"300\"  </a></li>\n";
}

?>

编辑：这与您要的内容无关，但是您也可以使用pathinfo（）函数对文件扩展名进行更通用的处理。然后，您不需要扩展的硬编码数组，就可以删除任何扩展。