PHP Manual
DOMNode
Gets the namespace prefix of the node based on the namespace URI

DOMNode::lookupPrefix

(PHP 5, PHP 7, PHP 8)

DOMNode::lookupPrefix — Gets the namespace prefix of the node based on the namespace URI

Description

public DOMNode::lookupPrefix(string $namespace): ?string

Gets the namespace prefix of the node based on the namespace URI.

Parameters

namespace: The namespace URI.

Return Values

The prefix of the namespace or null on error.

See Also

DOMNode::lookupNamespaceUri() - Gets the namespace URI of the node based on the prefix