Using PHP regular expressions to extract a value from an XML Schema

Using开发者_StackOverflow社区 PHP Regular Expression I want to extract some value from code

<?xml version="1.0" encoding="UTF-8"?>
                <xs:restriction base="xs:string">
                <xs:enumeration value="001">
                    <xs:annotation>
                        <xs:documentation>Accountancy</xs:documentation>
                    </xs:annotation>
                </xs:enumeration>
                <xs:enumeration value="002">
                    <xs:annotation>
                        <xs:documentation>Advertising</xs:documentation>
                    </xs:annotation>
                </xs:enumeration>
                <xs:enumeration value="005">
                    <xs:annotation>
                        <xs:documentation>Amusement</xs:documentation>
                    </xs:annotation>
                </xs:enumeration>
            </xs:enumeration>
            </xs:restriction>
        </xs:simpleType>
    </xs:schema>

I want to extract value 001 from

<xs:enumeration value="001">

For all tag

And text 'Accountancy' from

<xs:documentation>Accountancy</xs:documentation>

Using php reg ex match

how do I do this?

Try this for the first.

preg_match("/<xs:enumeration value=\"(\d+)\">/", $string, $matches);
print_r($matches);

And for the second

preg_match("/<xs:documentation>(.+)</xs:documentation>/", $string, $matches);
print_r($matches);

but XML parser would be a better solution. DOMDocument can handle it I think.