copy
(PHP 4, PHP 5)
copy — Copies file
說明
bool copy
( string $source
, string $dest
[, resource $context
] )
Makes a copy of the file source to dest .
If you wish to move a file, use the rename() function.
參數
- source
-
Path to the source file.
- dest
-
The destination path. If dest is a URL, the copy operation may fail if the wrapper does not support overwriting of existing files.
WarningIf the destination file already exists, it will be overwritten.
- context
-
A valid context resource created with stream_context_create().
Return值
如果成功則回傳 TRUE，失敗則回傳 FALSE。
更新日誌
| 版本 | 說明 |
|---|---|
| 5.3.0 | Added context support. |
| 4.3.0 | Both source and dest may now be URLs if the "fopen wrappers" have been enabled. See fopen() for more details. |
範例
Example#1 copy() example
<?php
$file = 'example.txt';
$newfile = 'example.txt.bak';
if (!copy($file, $newfile)) {
echo "failed to copy $file...\n";
}
?>