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このドキュメントでは、 php中国語ネットマニュアル リリース
(PHP >= 5.3.0, PECL phar >= 1.0.0)
PharFileInfo::setMetadata — Sets file-specific meta-data saved with a file
$metadata
)PharFileInfo::setMetadata() should only be used to store customized data in a file that cannot be represented with existing information stored with a file. Meta-data can significantly slow down the performance of loading a phar archive if the data is large, or if there are many files containing meta-data. It is important to note that file permissions are natively supported inside a phar; it is possible to set them with the PharFileInfo::chmod() method. As with all functionality that modifies the contents of a phar, the phar.readonly INI variable must be off in order to succeed if the file is within a Phar archive. Files within PharData archives do not have this restriction.
Some possible uses for meta-data include passing a user/group that should be set when a file is extracted from the phar to disk. Other uses could include explicitly specifying a MIME type to return. However, any useful data that describes a file, but should not be contained inside of it may be stored.
metadata
Any PHP variable containing information to store alongside a file
没有返回值。
Example #1 A PharFileInfo::setMetadata() example
<?php
// make sure it doesn't exist
@ unlink ( 'brandnewphar.phar' );
try {
$p = new Phar ( dirname ( __FILE__ ) . '/brandnewphar.phar' , 0 , 'brandnewphar.phar' );
$p [ 'file.txt' ] = 'hello' ;
$p [ 'file.txt' ]-> setMetadata (array( 'user' => 'bill' , 'mime-type' => 'text/plain' ));
var_dump ( $p [ 'file.txt' ]-> getMetaData ());
} catch ( Exception $e ) {
echo 'Could not create/modify phar: ' , $e ;
}
?>
以上例程会输出:
array(2) { ["user"]=> string(4) "bill" ["mime-type"]=> string(10) "text/plain" }