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PharFileInfo::setMetadata() - PharFileInfo类

百变鹏仔12个月前 (11-21)阅读数 12#技术干货
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PharFileInfo::setMetadata()

PharFileInfo::setMetadata() - PharFileInfo类

(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): void

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.

参数

$metadata

Any 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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