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@hakre
Created December 13, 2012 18:57
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Speeding up XML schema validations of a batch of XML files against the same XML schema (XSD)
<?php
/**
* @link http://stackoverflow.com/questions/13865149/speeding-up-xml-schema-validations-of-a-batch-of-xml-files-against-the-same-xml
*/
$mapping = [
'http://www.w3.org/2002/08/xhtml/xhtml1-transitional.xsd' => 'schema/xhtml1-transitional.xsd',
'http://www.w3.org/2001/xml.xsd' => 'schema/xml.xsd',
];
libxml_set_external_entity_loader(
function ($public, $system, $context) use ($mapping) {
if (is_file($system)) {
return $system;
}
if (isset($mapping[$system])) {
return __DIR__ . '/' . $mapping[$system];
}
$message = sprintf(
"Failed to load external entity: Public: %s; System: %s; Context: %s",
var_export($public, 1), var_export($system, 1),
strtr(var_export($context, 1), [" (\n " => '(', "\n " => '', "\n" => ''])
);
throw new RuntimeException($message);
}
);
$data_dom = new DOMDocument();
$data_dom->load('test-data.xml');
$data_dom->xinclude();
// Multiple validations using the schemaValidate method.
for ($attempt = 1; $attempt <= 3; $attempt++) {
$start = time();
echo "schemaValidate: Attempt #$attempt returns ";
if (!$data_dom->schemaValidate('test-schema.xsd')) {
echo "Invalid!";
} else {
echo "Valid!";
}
$end = time();
echo " in " . ($end - $start) . " seconds.\n";
}
// Loading schema into a string.
$schema_source = file_get_contents('test-schema.xsd');
// Multiple validations using the schemaValidate method.
for ($attempt = 1; $attempt <= 3; $attempt++) {
$start = time();
echo "schemaValidateSource: Attempt #$attempt returns ";
if (!$data_dom->schemaValidateSource($schema_source)) {
echo "Invalid!";
} else {
echo "Valid!";
}
$end = time();
echo " in " . ($end - $start) . " seconds.\n";
}
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