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bzread.xml
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bzread.xml
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<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<!-- EN-Revision: c564dbc4f35dd39b4415ebbb671f2764a44306a6 Maintainer: daijie Status: ready -->
<refentry xml:id="function.bzread" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>bzread</refname>
<refpurpose>bzip2 文件二进制安全地读取</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type class="union"><type>string</type><type>false</type></type><methodname>bzread</methodname>
<methodparam><type>resource</type><parameter>bz</parameter></methodparam>
<methodparam choice="opt"><type>int</type><parameter>length</parameter><initializer>1024</initializer></methodparam>
</methodsynopsis>
<para>
<function>bzread</function> 从指定的 bzip2 文件指针中读取数据。
</para>
<para>
读取到 <parameter>length</parameter>(未经压缩的长度)个字节,或者到文件尾,取决于先到哪个。
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>bz</parameter></term>
<listitem>
<para>
文件指针。它必须是有效的并且指向 <function>bzopen</function> 成功打开的文件。
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>length</parameter></term>
<listitem>
<para>
如果没有提供, <function>bzread</function> 一次会读入 1024 个字节(未经压缩的长度)。
一次最大可读入 8192 个未压缩的字节。
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
返回解压的数据,在错误时返回 &false;。
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>bzread</function> 范例</title>
<programlisting role="php">
<![CDATA[
<?php
$file = "/tmp/foo.bz2";
$bz = bzopen($file, "r") or die("Couldn't open $file");
$decompressed_file = '';
while (!feof($bz)) {
$decompressed_file .= bzread($bz, 4096);
}
bzclose($bz);
echo "The contents of $file are: <br />\n";
echo $decompressed_file;
?>
]]>
</programlisting>
</example>
</para>
</refsect1>
<refsect1 role="seealso">
&reftitle.seealso;
<para>
<simplelist>
<member><function>bzwrite</function></member>
<member><function>feof</function></member>
<member><function>bzopen</function></member>
</simplelist>
</para>
</refsect1>
</refentry>
<!-- Keep this comment at the end of the file
Local variables:
mode: sgml
sgml-omittag:t
sgml-shorttag:t
sgml-minimize-attributes:nil
sgml-always-quote-attributes:t
sgml-indent-step:1
sgml-indent-data:t
indent-tabs-mode:nil
sgml-parent-document:nil
sgml-default-dtd-file:"~/.phpdoc/manual.ced"
sgml-exposed-tags:nil
sgml-local-catalogs:nil
sgml-local-ecat-files:nil
End:
vim600: syn=xml fen fdm=syntax fdl=2 si
vim: et tw=78 syn=sgml
vi: ts=1 sw=1
-->