GlobIterator::count()

(PHP 5>=5.3.0,PHP 7)

Get the number of directories and files

说明

publicGlobIterator::count(void) : 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 aninteger.

范例

Example#1GlobIterator::count()example

<?php
$iterator = new GlobIterator('*.xml');
printf("Matched %d item(s)\r\n", $iterator->count());
?>

以上例程的输出类似于：

Matched 8 item(s)

参见

• GlobIterator::__construct() Construct a directory using glob
• count()计算数组中的单元数目，或对象中的属性个数
• glob()寻找与模式匹配的文件路径

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 ...
}
?>