php-doc-en/reference/varnish/examples.xml

<?xml version="1.0" encoding="utf-8"?>
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<chapter xml:id="varnish.examples" xmlns="http://docbook.org/ns/docbook">
 &reftitle.examples;
 <section xml:id="varnish.example">
  <title>Basic usage</title>
  <para>
   The example illustrates a simple usage of the ban functionality
  </para>
  <example>
   <title>Ban an URL</title>
   <programlisting role="php">
<![CDATA[
<?php

$args = array(
    VARNISH_CONFIG_HOST    => "::1",
    VARNISH_CONFIG_PORT    => 6082,
    VARNISH_CONFIG_SECRET  => "5174826b-8595-4958-aa7a-0609632ad7ca",
    VARNISH_CONFIG_TIMEOUT => 300,
);

$va = new VarnishAdmin($args);

try {
    if(!$va->connect()) {
        throw new VarnishException("Connection failed\n");
    }   
} catch (VarnishException $e) {
    echo $e->getMessage();
    exit(3);
}

try {
    if(!$va->auth()) {
        throw new VarnishException("Auth failed\n");
    }   
} catch (VarnishException $e) {
    echo $e->getMessage();
    exit(3);
}

try {
    $status = $va->ban('req.url ~ "^/$"');
    if (!VARNISH_STATUS_OK == $status) {
        throw new VarnishException("Ban method returned $status status\n");
    }
} catch (VarnishException $e) {
    echo $e->getMessage();
    exit(3);
}

exit(0);

]]>
   </programlisting>
  </example>
 </section>
</chapter>

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