addslashes.xml

<?xml version="1.0" encoding="utf-8"?>
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<refentry xml:id="function.addslashes" xmlns="http://docbook.org/ns/docbook">
 <refnamediv>
  <refname>addslashes</refname>
  <refpurpose>使用反斜线引用字符串</refpurpose>
 </refnamediv>
 
  <refsect1 role="description">
  &reftitle.description;
  <methodsynopsis>
   <type>string</type><methodname>addslashes</methodname>
   <methodparam><type>string</type><parameter>string</parameter></methodparam>
  </methodsynopsis>
  <para>
   返回需要在转义字符之前添加反斜线的字符串。这些字符是：
   <simplelist>
    <member>单引号（<literal>'</literal>）</member>
    <member>双引号（<literal>"</literal>）</member>
    <member>反斜线（<literal>\</literal>）</member>
    <member>NUL（NUL 字节）</member>
   </simplelist>
  </para>
  <para>
   <function>addslashes</function> 的一个用法就是转义由 PHP 执行字符串中的上述字符：
   <informalexample>
    <programlisting role="php">
<![CDATA[
<?php
$str = "O'Reilly?";
eval("echo '" . addslashes($str) . "';");
?>
]]>
    </programlisting>
   </informalexample>
  </para>
  <para>
   有时会错误的使用 <function>addslashes</function> 来防止 <link
   linkend="security.database.sql-injection">SQL 注入</link>。相反，应该使用数据库特定函数和/或预处理语句。
  </para>
 </refsect1>

  <refsect1 role="parameters">
  &reftitle.parameters;
  <para>
   <variablelist>
    <varlistentry>
     <term><parameter>string</parameter></term>
     <listitem>
      <para>
       要转义的字符。
      </para>
     </listitem>
    </varlistentry>
   </variablelist>
  </para>
 </refsect1>
 
 
  <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <para>
   返回转义后的字符。
  </para>
 </refsect1>
 
 <refsect1 role="examples">
  &reftitle.examples;
  <para>
   <example>
    <title>一个 <function>addslashes</function> 例子</title>
    <programlisting role="php">
<![CDATA[
<?php
$str = "Is your name O'Reilly?";

// 输出： Is your name O\'Reilly?
echo addslashes($str);
?>
]]>
    </programlisting>
   </example>
  </para>
 </refsect1>

 <refsect1 role="seealso">
  &reftitle.seealso;
  <para>
   <simplelist>
    <member><function>stripcslashes</function></member>
    <member><function>stripslashes</function></member>
    <member><function>addcslashes</function></member>
    <member><function>htmlspecialchars</function></member>
    <member><function>quotemeta</function></member>
    <member><function>get_magic_quotes_gpc</function></member>
   </simplelist>
  </para>
 </refsect1>
 
</refentry>
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