php-doc-en/reference/bzip2/functions/bzread.xml
2011-02-23 13:05:36 +00:00

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XML

<?xml version="1.0" encoding="utf-8"?>
<!-- $Revision$ -->
<refentry xml:id="function.bzread" xmlns="http://docbook.org/ns/docbook">
<refnamediv>
<refname>bzread</refname>
<refpurpose>Binary safe bzip2 file read</refpurpose>
</refnamediv>
<refsect1 role="description">
&reftitle.description;
<methodsynopsis>
<type>string</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> reads from the given bzip2 file pointer.
</para>
<para>
Reading stops when <parameter>length</parameter> (uncompressed) bytes have
been read or EOF is reached, whichever comes first.
</para>
</refsect1>
<refsect1 role="parameters">
&reftitle.parameters;
<para>
<variablelist>
<varlistentry>
<term><parameter>bz</parameter></term>
<listitem>
<para>
The file pointer. It must be valid and must point to a file
successfully opened by <function>bzopen</function>.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><parameter>length</parameter></term>
<listitem>
<para>
If not specified, <function>bzread</function> will read 1024
(uncompressed) bytes at a time. A maximum of 8192
uncompressed bytes will be read at a time.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect1>
<refsect1 role="returnvalues">
&reftitle.returnvalues;
<para>
Returns the uncompressed data, or &false; on error.
</para>
</refsect1>
<refsect1 role="examples">
&reftitle.examples;
<para>
<example>
<title><function>bzread</function> example</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>
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