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PHP SPL标准库的用法(遍历目录,查找固定条件的文件)

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Release: 2016-05-25 17:08:23
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php代码

<?php
class RecursiveFileFilterIterator extends FilterIterator {
    // 满足条件的扩展名
    protected $ext = array(&#39;jpg&#39;,&#39;gif&#39;);

    /**
     * 提供 $path 并生成对应的目录迭代器
     */
    public function __construct($path) {
        parent::__construct(new RecursiveIteratorIterator(new RecursiveDirectoryIterator($path)));
    }

    /**
     * 检查文件扩展名是否满足条件
     */
    public function accept() {
        $item = $this->getInnerIterator();
        if ($item->isFile() && 
                in_array(pathinfo($item->getFilename(), PATHINFO_EXTENSION), $this->ext)) {
            return TRUE;
        }
    }
}

// 实例化
foreach (new RecursiveFileFilterIterator(&#39;D:/history&#39;) as $item) {
    echo $item . PHP_EOL;
}
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