CODEWITHSUNDEEP
phpxmlvalidationxsdxml-parsing
varuog
varuog

Reputation: 3081

validate a xml file against a xsd using php

how to validate a xml file against a xsd? there is domdocument::schemaValidate() but It does not tell where are the errors. is there any class for that? does it have any worth making that parser from scratch? or is it just reinventing he wheel,

Upvotes: 23

Views: 34234

Answers (3)

Sebastian Viereck
Sebastian Viereck

Reputation: 5923

This is a complete code snippet for displaying xsd validation errors:

    $xml = '<test/>';
    $xsd = '/path/to/xsd';
    // needed for getting errors
    libxml_use_internal_errors(true);

    $domDocument= new DOMDocument();
    $domDocument->loadXML($xml); 
    if (!$domDocument->schemaValidate($xsd)) {
        $errors = libxml_get_errors();
        foreach ($errors as $error) {
            print_r($error);
        }
        libxml_clear_errors();
    }

Upvotes: 2

Ed Heal
Ed Heal

Reputation: 60027

This code does the business:

$xml= new DOMDocument();
$xml->loadXML(<A string goes here containing the XML data>, LIBXML_NOBLANKS); // Or load if filename required
if (!$xml->schemaValidate(<file name for the XSD file>)) // Or schemaValidateSource if string used.
{
   // You have an error in the XML file
}

See the code in http://php.net/manual/en/domdocument.schemavalidate.php To retrieve the errors.

I.e.

justin at redwiredesign dot com 08-Nov-2006 03:32 post.

Upvotes: 29

Maciej Niemir
Maciej Niemir

Reputation: 614

User contrib from http://php.net/manual/en/domdocument.schemavalidate.php

It works like a charm!

For more detailed feedback from DOMDocument::schemaValidate, disable libxml errors and fetch error information yourself. See http://php.net/manual/en/ref.libxml.php for more info.

example.xml

<?xml version="1.0"?>
<example>
    <child_string>This is an example.</child_string>
    <child_integer>Error condition.</child_integer>
</example>

example.xsd

<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
elementFormDefault="qualified">
    <xs:element name="example">
        <xs:complexType>
            <xs:sequence>
                <xs:element name="child_string" type="xs:string"/>
                <xs:element name="child_integer" type="xs:integer"/>
            </xs:sequence>
        </xs:complexType>
    </xs:element>
</xs:schema>

PHP

<?php

function libxml_display_error($error)
{
    $return = "<br/>\n";
    switch ($error->level) {
        case LIBXML_ERR_WARNING:
            $return .= "<b>Warning $error->code</b>: ";
            break;
        case LIBXML_ERR_ERROR:
            $return .= "<b>Error $error->code</b>: ";
            break;
        case LIBXML_ERR_FATAL:
            $return .= "<b>Fatal Error $error->code</b>: ";
            break;
    }
    $return .= trim($error->message);
    if ($error->file) {
        $return .=    " in <b>$error->file</b>";
    }
    $return .= " on line <b>$error->line</b>\n";

    return $return;
}

function libxml_display_errors() {
    $errors = libxml_get_errors();
    foreach ($errors as $error) {
        print libxml_display_error($error);
    }
    libxml_clear_errors();
}

// Enable user error handling
libxml_use_internal_errors(true);

$xml = new DOMDocument();
$xml->load('example.xml');

if (!$xml->schemaValidate('example.xsd')) {
    print '<b>DOMDocument::schemaValidate() Generated Errors!</b>';
    libxml_display_errors();
}

?>

Upvotes: 13

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