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XMLReader::setRelaxNGSchemaSource	XMLReader::XML

XMLReader	Last updated: Mon, 26 Oct 2026

XMLReader::setSchema

(PHP 5 >= 5.2.0, PHP 7, PHP 8)

XMLReader::setSchema — Validate document against XSD

Description

public function XMLReader::setSchema(?string $filename): bool

Use W3C XSD schema to validate the document as it is processed. Activation is only possible before the first Read().

Parameters

filename: The filename of the XSD schema.

Return Values

Returns true on success or false on failure.

Errors/Exceptions

Issues E_WARNING if libxml was built without schema support, the schema contains errors or if XMLReader::read() has already been called.

Notes

Caution

This function is only available when PHP is compiled against libxml 20620 or later.

See Also

XMLReader::setRelaxNGSchema() - Set the filename or URI for a RelaxNG Schema
XMLReader::setRelaxNGSchemaSource() - Set the data containing a RelaxNG Schema
XMLReader::isValid() - Indicates if the parsed document is valid

XMLReader::setRelaxNGSchemaSource	XMLReader::XML

XMLReader	Last updated: Mon, 26 Oct 2026