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XMLReader::lookupNamespace

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

XMLReader::lookupNamespaceLookup namespace for a prefix

说明

public XMLReader::lookupNamespace(string $prefix): ?string

Lookup in scope namespace for a given prefix.

参数

prefix

String containing the prefix.

返回值

The value of the namespace, or null if no namespace exists.

更新日志

版本 说明
8.0.0 This function can no longer return false.
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