PharFileInfo::setMetadata() - PharFileInfo类
PharFileInfo::setMetadata()
(PHP 5 >= 5.3.0, PHP 7, PECL phar >= 1.0.0)
Sets file-specific meta-data saved with a file
说明
publicPharFileInfo::setMetadata(mixed $metadata): voidPharFileInfo::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.
参数
$metadataAny PHP variable containing information to store alongside a file
返回值
没有返回值。
范例
A PharFileInfo::setMetadata() example
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