doc-zh/reference/fileinfo/functions/finfo-buffer.xml at master · php/doc-zh · GitHub

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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<!-- EN-Revision: 82ddd2ec8ad195035dcb57dd8f97d27b83ddc126 Maintainer: yuanyuqiang Status: ready -->
<!-- CREDITS: mowangjuanzi, Luffy -->
<!-- Generated by xml_proto.php v2.3. Found in /scripts directory of phpdoc. -->
<refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.finfo-buffer">
 <refnamediv>
  <refname>finfo_buffer</refname>
  <refname>finfo::buffer</refname>
  <refpurpose>返回一个字符串缓冲区的信息</refpurpose>
 </refnamediv>
 <refsect1 role="description">
  &reftitle.description;
  <simpara>&style.procedural;</simpara>
  <methodsynopsis>
   <type class="union"><type>string</type><type>false</type></type><methodname>finfo_buffer</methodname>
   <methodparam><type>finfo</type><parameter>finfo</parameter></methodparam>
   <methodparam><type>string</type><parameter>string</parameter></methodparam>
   <methodparam choice="opt"><type>int</type><parameter>flags</parameter><initializer><constant>FILEINFO_NONE</constant></initializer></methodparam>
   <methodparam choice="opt"><type class="union"><type>resource</type><type>null</type></type><parameter>context</parameter><initializer>&null;</initializer></methodparam>
  </methodsynopsis>
  <simpara>&style.oop;</simpara>
  <methodsynopsis role="finfo">
   <modifier>public</modifier> <type class="union"><type>string</type><type>false</type></type><methodname>finfo::buffer</methodname>
   <methodparam><type>string</type><parameter>string</parameter></methodparam>
   <methodparam choice="opt"><type>int</type><parameter>flags</parameter><initializer><constant>FILEINFO_NONE</constant></initializer></methodparam>
   <methodparam choice="opt"><type class="union"><type>resource</type><type>null</type></type><parameter>context</parameter><initializer>&null;</initializer></methodparam>
  </methodsynopsis>

  <simpara>
    本函数用来获取字符串中二进制数据的信息。
  </simpara>

 </refsect1>
 <refsect1 role="parameters">
  &reftitle.parameters;
  <variablelist>
   <varlistentry>
    <term><parameter>finfo</parameter></term>
    <listitem>
     &fileinfo.parameters.finfo;
    </listitem>
   </varlistentry>
   <varlistentry>
    <term><parameter>string</parameter></term>
    <listitem>
     <simpara>
      要检查的文件内容。
     </simpara>
    </listitem>
   </varlistentry>
   <varlistentry>
    <term><parameter>flags</parameter></term>
    <listitem>
     <simpara>
      一个 <link linkend="fileinfo.constants">Fileinfo
      常量 </link> 或多个 <link linkend="fileinfo.constants">Fileinfo 常量 </link> 进行逻辑或运算。
     </simpara>
    </listitem>
   </varlistentry>
   <varlistentry>
    <term><parameter>context</parameter></term>
    <listitem>
     <simpara>
     </simpara>
    </listitem>
   </varlistentry>
  </variablelist>
 </refsect1>
 <refsect1 role="returnvalues">
  &reftitle.returnvalues;
  <simpara>
   返回 <parameter>string</parameter> 参数所指定内容的类型描述。
   发生错误时返回 &false; 。
  </simpara>
 </refsect1>

 <refsect1 role="changelog">
  &reftitle.changelog;
  <informaltable>
   <tgroup cols="2">
    <thead>
     <row>
      <entry>&Version;</entry>
      <entry>&Description;</entry>
     </row>
    </thead>
    <tbody>
     &fileinfo.changelog.finfo-object;
     <row>
      <entry>8.0.0</entry>
      <entry>
       <parameter>context</parameter> 现在可以为 null。
      </entry>
     </row>
    </tbody>
   </tgroup>
  </informaltable>
 </refsect1>

 <refsect1 role="examples">
  &reftitle.examples;
  <example>
   <title><function>finfo_buffer</function> 示例</title>
   <programlisting role="php">
<![CDATA[
<?php
$finfo = new finfo(FILEINFO_MIME);
echo $finfo->buffer($_POST["script"]) . "\n";
?>
]]>
   </programlisting>
   &example.outputs.similar;
   <screen>
<![CDATA[
application/x-sh; charset=us-ascii
]]>
   </screen>
  </example>
 </refsect1>

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

</refentry>
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