rebuild xdoc

    <code class="directive"><a href="../mod/mod_rewrite.html#rewritebase">RewriteBase</a></code> directive to

    see how you can further manipulate how this is handled.) Then, a new

    internal subrequest is issued with the new URL. This restarts

    processing of the API phases.</p>

    processing of the request phases. (Be careful to avoid rules that

    can cause looping. See <a href="http://wiki.apache.org/httpd/RewriteLooping">RewriteLooping</a>

    for further discussion of this problem.</p>

    <p>Because of this further manipulation of the URL in per-directory

    context, you'll need to take care to craft your rewrite rules

      <img src="../images/rewrite_rule_flow.png" alt="Flow of RewriteRule and RewriteCond matching" /><br />

      <dfn>Figure 1:</dfn>The control flow through the rewriting ruleset

</p>

      <p>As you can see, first the URL is matched against the

      <em>Pattern</em> of each rule. When it fails mod_rewrite

      immediately stops processing this rule and continues with the

      <p>First the URL is matched against the

      <em>Pattern</em> of each rule. If it fails, mod_rewrite

      immediately stops processing this rule, and continues with the

      next rule. If the <em>Pattern</em> matches, mod_rewrite looks

      for corresponding rule conditions. If none are present, it

      just substitutes the URL with a new value which is

      constructed from the string <em>Substitution</em> and goes on

      for corresponding rule conditions (RewriteCond directives,

      appearing immediately above the RewriteRule in the configuration).

      If none are present, it substitutes the URL with a new value, which is

      constructed from the string <em>Substitution</em>, and goes on

      with its rule-looping. But if conditions exist, it starts an

      inner loop for processing them in the order that they are

      listed. For conditions the logic is different: we don't match

      listed. For conditions, the logic is different: we don't match

      a pattern against the current URL. Instead we first create a

      string <em>TestString</em> by expanding variables,

      back-references, map lookups, <em>etc.</em> and then we try