GlobIterator::count

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

GlobIterator::count — Get the number of directories and files

说明

public GlobIterator::count(): int

Gets the number of directories and files found by the glob expression.

参数

此函数没有参数。

返回值

The number of returned directories and files, as an int.

示例

示例 #1 GlobIterator::count() example

<?php
$iterator = new GlobIterator('*.xml');

printf("Matched %d item(s)\r\n", $iterator->count());
?>

以上示例的输出类似于：

Matched 8 item(s)

参见

GlobIterator::__construct() - Construct a directory using glob
count() - 统计数组、Countable 对象中所有元素的数量
glob() - 寻找与模式匹配的文件路径

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TwystO ¶

8 years ago

As stated here https://bugs.php.net/bug.php?id=55701 the count() method can lead to errors.

For example this won't works if no files are found in the target directory :

<?php
$iterator = new \GlobIterator($ftpDirectory . '/*.*', FilesystemIterator::KEY_AS_FILENAME);

if($iterator->count()) {
    foreach($iterator as $filePath) {
        // do some stuff ...
    }
}
?>

A workaround to this bug could be :

<?php
foreach(new \GlobIterator($ftpDirectory . '/*.*', FilesystemIterator::KEY_AS_FILENAME) as $filePath) {
    // do some stuff ...
}
?>