<?xml version="1.0" encoding="utf-8"?>
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<refentry xml:id="function.db2-escape-string" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>db2_escape_string</refname>
  <refpurpose>
   Used to escape certain characters
  </refpurpose>
 </refnamediv>
 
 <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>string</type><methodname>db2_escape_string</methodname>
   <methodparam><type>string</type><parameter>string_literal</parameter></methodparam>
  </methodsynopsis>
  <para>
   Prepends backslashes to special characters in the string argument.
  </para>
 </refsect1>
 
 <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>string_literal</parameter></term>
     <listitem>
      <para>
       The string that contains special characters that need to be modified. 
       Characters that are prepended with a backslash are <literal>\x00</literal>, 
       <literal>\n</literal>, <literal>\r</literal>, <literal>\</literal>, 
       <literal>'</literal>, <literal>"</literal> and <literal>\x1a</literal>.
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>
 
 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   Returns <parameter>string_literal</parameter> with the special characters 
   noted above prepended with backslashes.
  </para>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title>A <function>db2_escape_string</function> example</title>
    <para>
     Result of using the <function>db2_escape_string</function> function
    </para>
    <programlisting role="php">
<![CDATA[
<?php

$conn = db2_connect($database, $user, $password);

if ($conn) {
    $str[0] = "All characters: \x00 , \n , \r , \ , ' , \" , \x1a .";
    $str[1] = "Backslash (\). Single quote ('). Double quote (\")";
    $str[2] = "The NULL character \0 must be quoted as well";
    $str[3] = "Intersting characters: \x1a , \x00 .";
    $str[4] = "Nothing to quote";
    $str[5] = 200676;
    $str[6] = "";

    foreach( $str as $string ) {
        echo "db2_escape_string: " . db2_escape_string($string). "\n";
    }
}
?>
]]>
    </programlisting>
    &example.outputs;
    <screen>
<![CDATA[
db2_escape_string: All characters: \0 , \n , \r , \\ , \' , \" , \Z .
db2_escape_string: Backslash (\\). Single quote (\'). Double quote (\")
db2_escape_string: The NULL character \0 must be quoted as well
db2_escape_string: Intersting characters: \Z , \0 .
db2_escape_string: Nothing to quote
db2_escape_string: 200676
db2_escape_string:
]]>
    </screen>
   </example>
  </para>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>db2_prepare</function></member>
   </simplelist>
  </para>
 </refsect1>

</refentry>

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