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이 문서에서는 PHP 중국어 웹사이트 매뉴얼 풀어 주다
(PHP >= 5.3.0, PECL phar >= 2.0.0)
PharData::copy — Copy a file internal to the phar archive to another new file within the phar
$oldfile
, string $newfile
)Copy a file internal to the tar/zip archive to another new file within the same archive. This is an object-oriented alternative to using copy() with the phar stream wrapper.
oldfile
newfile
returns TRUE
on success, but it is safer to encase method call in a
try/catch block and assume success if no exception is thrown.
throws UnexpectedValueException if the source file does not exist, the destination file already exists, write access is disabled, opening either file fails, reading the source file fails, or a PharException if writing the changes to the phar fails.
Example #1 A PharData::copy() example
This example shows using PharData::copy() and the equivalent stream wrapper performance of the same thing. The primary difference between the two approaches is error handling. All PharData methods throw exceptions, whereas the stream wrapper uses trigger_error() .
<?php
try {
$phar = new PharData ( 'myphar.tar' );
$phar [ 'a' ] = 'hi' ;
$phar -> copy ( 'a' , 'b' );
echo $phar [ 'b' ]; // outputs "phar://myphar.tar/b"
} catch ( Exception $e ) {
// handle error
}
// the stream wrapper equivalent of the above code.
// E_WARNINGS are triggered on error rather than exceptions.
copy ( 'phar://myphar.tar/a' , 'phar//myphar.tar/c' );
echo file_get_contents ( 'phar://myphar.tar/c' ); // outputs "hi"
?>