php-doc-en/reference/misc/functions/php-strip-whitespace.xml

<?xml version='1.0' encoding='iso-8859-1'?>
<!-- $Revision: 1.2 $ -->
<refentry id="function.php-strip-whitespace">
 <refnamediv>
  <refname>php_strip_whitespace</refname>
  <refpurpose>
   Return source with stripped comments and whitespace
  </refpurpose>
 </refnamediv>
 <refsect1>
  &reftitle.description;
  <methodsynopsis>
   <type>string</type><methodname>php_strip_whitespace</methodname>
   <methodparam><type>string</type><parameter>filename</parameter></methodparam>
  </methodsynopsis>
  <para>
   Returns the PHP source code in <parameter>filename</parameter> with
   PHP comments and whitespace removed. This may be useful for determining the
   amount of actual code in your scripts compared with the amount of comments.
  </para>
 </refsect1>
 <refsect1>
  &reftitle.returnvalues;
  <para>
   The stripped source code will be returned on success, or an empty string
   on failure.
  </para>
 </refsect1>
 <refsect1>
  &reftitle.examples;
  <para>
   <example>
    <title><function>php_strip_whitespace</function> example</title>
    <programlisting role="php">
<![CDATA[
<?php
// PHP comment here

/*
 * Another PHP comment
 */

echo        php_strip_whitespace($_SERVER['PHP_SELF']);
// Newlines are considered whitespace, and are removed too:
do_nothing();
?>
]]>
    </programlisting>
    &example.outputs;
    <screen>
<![CDATA[
<?php
 echo php_strip_whitespace($_SERVER['PHP_SELF']); do_nothing(); ?>
]]>
    </screen>
    <para>
     Notice the PHP comments are gone, as are the whitespace and newline
     after the first echo statement.
    </para>
   </example>
  </para>
 </refsect1>
</refentry>

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