mirror of
https://github.com/php/doc-ja.git
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327 lines
9.7 KiB
XML
327 lines
9.7 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
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<!-- $Revision$ -->
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<!-- EN-Revision: 561e36d646b8e48dc53a910234ee9f30cba147d0 Maintainer: takagi Status: ready -->
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<refentry xml:id="function.stream-notification-callback" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
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<refnamediv>
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<refname>stream_notification_callback</refname>
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<refpurpose><literal>notification</literal> コンテキストパラメータ用のコールバック関数</refpurpose>
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</refnamediv>
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<refsect1 role="description"><!-- {{{ -->
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&reftitle.description;
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<methodsynopsis>
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<type>void</type><methodname><replaceable>stream_notification_callback</replaceable></methodname>
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<methodparam><type>int</type><parameter>notification_code</parameter></methodparam>
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<methodparam><type>int</type><parameter>severity</parameter></methodparam>
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<methodparam><type class="union"><type>string</type><type>null</type></type><parameter>message</parameter></methodparam>
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<methodparam><type>int</type><parameter>message_code</parameter></methodparam>
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<methodparam><type>int</type><parameter>bytes_transferred</parameter></methodparam>
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<methodparam><type>int</type><parameter>bytes_max</parameter></methodparam>
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</methodsynopsis>
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<para>
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イベント発生時にコールされる <type>callable</type> 関数です。
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<link linkend="context.params.notification">notification context parameter</link>
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が使用します。
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</para>
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<note>
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<para>
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これは実際の関数では <emphasis>ありません</emphasis>。
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コールバック関数がどうあるべきかというプロトタイプだけを示すものです。
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</para>
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</note>
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</refsect1><!-- }}} -->
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<refsect1 role="parameters"><!-- {{{ -->
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&reftitle.parameters;
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<para>
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<variablelist>
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<varlistentry>
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<term><parameter>notification_code</parameter></term>
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<listitem>
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<para>
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<constant>STREAM_NOTIFY_<replaceable>*</replaceable></constant> 通知定数のひとつ。
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>severity</parameter></term>
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<listitem>
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<para>
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<constant>STREAM_NOTIFY_SEVERITY_*</constant> 通知定数のひとつ。
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>message</parameter></term>
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<listitem>
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<para>
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イベントについて説明するメッセージが存在する場合に渡されます。
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>message_code</parameter></term>
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<listitem>
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<para>
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イベントについて説明するコードが存在する場合に渡されます。
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</para>
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<para>
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この値の意味は、使用するラッパーによって異なります。
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>bytes_transferred</parameter></term>
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<listitem>
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<para>
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利用可能な場合は <parameter>bytes_transferred</parameter>
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の値が格納されます。
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><parameter>bytes_max</parameter></term>
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<listitem>
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<para>
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利用可能な場合は <parameter>bytes_max</parameter>
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の値が格納されます。
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</refsect1><!-- }}} -->
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<refsect1 role="returnvalues"><!-- {{{ -->
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&reftitle.returnvalues;
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<para>
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&return.void;
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</para>
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</refsect1><!-- }}} -->
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<refsect1 role="changelog">
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&reftitle.changelog;
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<informaltable>
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<tgroup cols="2">
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<thead>
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<row>
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<entry>&Version;</entry>
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<entry>&Description;</entry>
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</row>
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</thead>
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<tbody>
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<row>
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<entry>8.3.0</entry>
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<entry>
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<constant>STREAM_NOTIFY_COMPLETED</constant> のサポートが実装されました。
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これより前のバージョンでは、PHP はこの通知を決して発生させませんでした。
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</entry>
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</row>
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</tbody>
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</tgroup>
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</informaltable>
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</refsect1>
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<refsect1 role="examples"><!-- {{{ -->
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&reftitle.examples;
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<para>
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<example xml:id="stream-notification-callback.example.basic"><!-- {{{ -->
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<title><function>stream_notification_callback</function> の例</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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function stream_notification_callback($notification_code, $severity, $message, $message_code, $bytes_transferred, $bytes_max) {
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switch($notification_code) {
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case STREAM_NOTIFY_RESOLVE:
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case STREAM_NOTIFY_AUTH_REQUIRED:
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case STREAM_NOTIFY_COMPLETED:
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case STREAM_NOTIFY_FAILURE:
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case STREAM_NOTIFY_AUTH_RESULT:
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var_dump($notification_code, $severity, $message, $message_code, $bytes_transferred, $bytes_max);
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/* 無視 */
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break;
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case STREAM_NOTIFY_REDIRECTED:
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echo "Being redirected to: ", $message;
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break;
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case STREAM_NOTIFY_CONNECT:
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echo "Connected...";
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break;
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case STREAM_NOTIFY_FILE_SIZE_IS:
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echo "Got the filesize: ", $bytes_max;
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break;
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case STREAM_NOTIFY_MIME_TYPE_IS:
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echo "Found the mime-type: ", $message;
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break;
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case STREAM_NOTIFY_PROGRESS:
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echo "Made some progress, downloaded ", $bytes_transferred, " so far";
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break;
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}
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echo "\n";
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}
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$ctx = stream_context_create();
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stream_context_set_params($ctx, array("notification" => "stream_notification_callback"));
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file_get_contents("http://php.net/contact", false, $ctx);
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?>
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]]>
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</programlisting>
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&example.outputs.similar;
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<screen>
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<![CDATA[
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Connected...
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Found the mime-type: text/html; charset=utf-8
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Being redirected to: http://no.php.net/contact
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Connected...
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Got the filesize: 0
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Found the mime-type: text/html; charset=utf-8
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Being redirected to: http://no.php.net/contact.php
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Connected...
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Got the filesize: 4589
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Found the mime-type: text/html;charset=utf-8
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Made some progress, downloaded 0 so far
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Made some progress, downloaded 0 so far
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Made some progress, downloaded 0 so far
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Made some progress, downloaded 1440 so far
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Made some progress, downloaded 2880 so far
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Made some progress, downloaded 4320 so far
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Made some progress, downloaded 5760 so far
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Made some progress, downloaded 6381 so far
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Made some progress, downloaded 7002 so far
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]]>
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</screen>
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</example><!-- }}} -->
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</para>
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<para>
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<example xml:id="stream-notification-callback.example.download"><!-- {{{ -->
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<title>コマンドラインのダウンロードツール用のシンプルなプログレスバー</title>
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<programlisting role="php">
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<![CDATA[
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<?php
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function usage($argv) {
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echo "Usage:\n";
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printf("\tphp %s <http://example.com/file> <localfile>\n", $argv[0]);
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exit(1);
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}
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function stream_notification_callback($notification_code, $severity, $message, $message_code, $bytes_transferred, $bytes_max) {
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static $filesize = null;
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switch($notification_code) {
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case STREAM_NOTIFY_RESOLVE:
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case STREAM_NOTIFY_AUTH_REQUIRED:
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case STREAM_NOTIFY_COMPLETED:
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case STREAM_NOTIFY_FAILURE:
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case STREAM_NOTIFY_AUTH_RESULT:
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/* 無視 */
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break;
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case STREAM_NOTIFY_REDIRECTED:
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echo "Being redirected to: ", $message, "\n";
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break;
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case STREAM_NOTIFY_CONNECT:
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echo "Connected...\n";
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break;
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case STREAM_NOTIFY_FILE_SIZE_IS:
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$filesize = $bytes_max;
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echo "Filesize: ", $filesize, "\n";
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break;
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case STREAM_NOTIFY_MIME_TYPE_IS:
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echo "Mime-type: ", $message, "\n";
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break;
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case STREAM_NOTIFY_PROGRESS:
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if ($bytes_transferred > 0) {
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if (!isset($filesize)) {
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printf("\rUnknown filesize.. %2d kb done..", $bytes_transferred/1024);
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} else {
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$length = (int) (($bytes_transferred/$filesize)*100);
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printf("\r[%-100s] %d%% (%2d/%2d kb)", str_repeat("=", $length). ">", $length, ($bytes_transferred/1024), $filesize/1024);
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}
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}
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break;
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}
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}
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isset($argv[1], $argv[2]) or usage($argv);
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$ctx = stream_context_create();
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stream_context_set_params($ctx, array("notification" => "stream_notification_callback"));
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$fp = fopen($argv[1], "r", false, $ctx);
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if (is_resource($fp) && file_put_contents($argv[2], $fp)) {
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echo "\nDone!\n";
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exit(0);
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}
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$err = error_get_last();
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echo "\nErrrrrorr..\n", $err["message"], "\n";
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exit(1);
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?>
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]]>
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</programlisting>
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<para>
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上の例を
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<literal>php -n fetch.php
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http://no2.php.net/get/php-5-LATEST.tar.bz2/from/this/mirror
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php-latest.tar.bz2</literal> のように実行すると、次のような出力となります。
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</para>
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<screen>
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<![CDATA[
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Connected...
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Mime-type: text/html; charset=utf-8
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Being redirected to: http://no2.php.net/distributions/php-5.2.5.tar.bz2
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Connected...
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Filesize: 7773024
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Mime-type: application/octet-stream
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[========================================> ] 40% (3076/7590 kb)
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]]>
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</screen>
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</example>
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</para>
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</refsect1><!-- }}} -->
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<refsect1 role="seealso"><!-- {{{ -->
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&reftitle.seealso;
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<para>
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<simplelist>
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<member><xref linkend="context.params" /></member>
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</simplelist>
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</para>
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</refsect1><!-- }}} -->
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</refentry>
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<!-- Keep this comment at the end of the file
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Local variables:
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mode: sgml
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sgml-omittag:t
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sgml-shorttag:t
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sgml-minimize-attributes:nil
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sgml-always-quote-attributes:t
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sgml-indent-step:1
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sgml-indent-data:t
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indent-tabs-mode:nil
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sgml-parent-document:nil
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sgml-default-dtd-file:"~/.phpdoc/manual.ced"
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sgml-exposed-tags:nil
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sgml-local-catalogs:nil
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sgml-local-ecat-files:nil
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End:
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vim600: syn=xml fen fdm=syntax fdl=2 si
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vim: et tw=78 syn=sgml
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vi: ts=1 sw=1
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-->
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