PHP: capture a multiline substring

debugcn Published at Dev

Questi

I have a long multiline string (its in a file that I can load into a string), lets take this as example:

<response status="success" code="19">
  <result total-count="1" count="1">
    <deviceconfig>
      <system>
        <type>
          <static/>
        </type>
      </system>
      <setting>
    </deviceconfig>
  </result>
</response>
<response status="success" code="19">
  <result total-count="1" count="1">
    <network>
      <interface>
        <ethernet/>
      </interface>
      <profiles>
        <monitor-profile>
          <entry name="default">
            <interval>3</interval>
            <action>wait-recover</action>
          </entry>
        </monitor-profile>
      </profiles>
    </network>
  </result>
</response>

I need to extract the system subset of this and have it in a string with the following content taken from above example:

      <system>
        <type>
          <static/>
        </type>
      </system>

In my use case both the original sample is much much larger as well as the text inside the system is a little bit larger

Questi

ok, i found a solution to do this:

preg_match_all('/(<system>.*<\/system>)/ms', file_get_contents('./myinputfile'), $xmlinit);
$output=$xmlinit[0][0]
file_put_contents('./myoutputfile', $output );

Recommendations for improvements are welcome!

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