以下代码:
$zip = new ZipArchive();
if ($zip->open('./archive.zip', ZIPARCHIVE::CREATE) !== TRUE) {
die ("Could not open archive");
}
$iterator = new RecursiveIteratorIterator(new RecursiveDirectoryIterator("./folder/"));
foreach ($iterator as $key => $value) {
try {
$zip->addFile(realpath($key), $key);
echo "'$key' successfully added.'n";
} catch (Exception $e) {
echo "ERROR: Could not add the file '$key': $e'n";
}
}
$zip->close();
如果你试图遍历的子文件夹中有太多文件，则抛出以下异常:
Uncaught exception 'UnexpectedValueException' with message 'RecursiveDirectoryIterator::__construct(./some/path/): failed to open dir: Too many open files' in /some/other/path/zip.php:24
Stack trace:
#0 [internal function]: RecursiveDirectoryIterator->__construct('./some/path/')
#1 /some/other/path/zip.php(24): RecursiveDirectoryIterator->getChildren()
#2 {main}
thrown in /some/other/path/zip.php on line 24
如何在不遇到此异常的情况下成功地遍历大量文件夹和文件?
只需将迭代器转换为具有iterator_to_array函数的数组，就可以遍历任意多的文件:
$iterator = new RecursiveIteratorIterator(new RecursiveDirectoryIterator("./folder/"));
$files = iterator_to_array($iterator, true);
// iterate over the directory
// add each file found to the archive
foreach ($files as $key => $value) {
try {
$zip->addFile(realpath($key), $key);
echo "'$key' successfully added.'n";
} catch (Exception $e) {
echo "ERROR: Could not add the file '$key': $e'n";
}
}