PHP學習-1

入門小實驗

<code>&lt;html&gt;
&lt;title&gt;My First Hello World&lt;/title&gt;
&lt;body&gt;
    <span>&lt;?php</span><span>// ?和php之间不能有空格</span><span>if</span>(!<span>empty</span>(<span>$_POST</span>[<span>'name'</span>]))
        {
            <span>echo</span><span>"Hello, {$_POST['name']}, Welcome to Our Web"</span>;
        }
    <span>?&gt;</span>    &lt;form action=<span>"&lt;?php $PHP_SELF; ?&gt;" method=<span>"post"</span>&gt;
        Enter Your Name:&lt;input type=<span>"text"</span> name=<span>"name"</span>/&gt;
        &lt;input type=<span>"submit"</span>/&gt;
    &lt;/form&gt;

    <span>&lt;?php</span><span>$mysql_host</span> = <span>"8.8.8.8"</span>;
    <span>$mysql_user</span> = <span>"guess"</span>;
    <span>$mysql_pwd</span>  = <span>"guess"</span>;
    <span>$connect</span> = mysql_connect(<span>$mysql_host</span>,<span>$mysql_user</span>,<span>$mysql_pwd</span>) <span>or</span><span>die</span>(<span>"connect failed"</span> . mysql_error());
    mysql_select_db(<span>"md_guess"</span>, <span>$connect</span>);
    <span>$sql</span> = <span>"select * from t_user_1 limit ${_POST['name']};"</span>;
    <span>$result</span> = mysql_query(<span>$sql</span>, <span>$connect</span>);

    <span>if</span>(<span>$result</span>)
    {
        <span>// 获取列表名</span><span>$title</span> = <span>array</span>();
        <span>for</span> (<span>$i</span>=<span>0</span>; <span>$i</span>&lt;mysql_num_fields(<span>$result</span>); <span>$i</span>++)
        {
            <span>$title</span>[<span>$i</span>] = mysql_field_name(<span>$result</span>, <span>$i</span>);
        }

        <span>$data</span> = <span>array</span>();
        <span>$num</span> = <span>0</span>;
        <span>// 获取数据</span><span>while</span> (<span>$row</span>=mysql_fetch_row(<span>$result</span>))
        {
            <span>$item</span> = <span>array</span>();
            <span>for</span> (<span>$i</span>=<span>0</span>; <span>$i</span>&lt;mysql_num_fields(<span>$result</span>); <span>$i</span>++ )
            {
                <span>$item</span>[<span>$i</span>] = <span>$row</span>[<span>$i</span>];
            }
            <span>$data</span>[<span>$num</span>] = <span>$item</span>;
            <span>$num</span> += <span>1</span>;
        }

        <span>// 显示数据</span><span>echo</span><span>'&lt;table border="1" cellpadding="1" cellspacing="2"&gt;'</span>;

        <span>for</span>(<span>$i</span>=<span>0</span>; <span>$i</span>&lt;count(<span>$title</span>); <span>$i</span>++)
        {
            <span>echo</span><span>"&lt;tr&gt;";

            <span>echo</span><span>"&lt;td&gt;"</span>;
            <span>echo</span><span>$title</span>[<span>$i</span>];
            <span>echo</span><span>"&lt;/td&gt;"</span>;

            <span>for</span>(<span>$j</span>=<span>0</span>; <span>$j</span>&lt;count(<span>$data</span>); <span>$j</span>++)
            {
                <span>echo</span><span>"&lt;td&gt;"</span>;
                <span>echo</span><span>$data</span>[<span>$j</span>][<span>$i</span>];
                <span>echo</span><span>"&lt;/td&gt;"</span>;
            }

            <span>echo</span><span>"&lt;/tr&gt;"</span>;
            <span>//echo "&lt;br&gt;";</span>
        }

        <span>echo</span><span>"&lt;/table&gt;"</span>;
    }
    <span>else</span>
    {
        <span>echo</span><span>"Query Failed"</span>;
    }

    <span>if</span>(<span>$result</span>)
    {
        mysql_freeresult(<span>$result</span>);
    }
    mysql_close(<span>$connect</span>);

    <span>?&gt;</span>
&lt;/body&gt;
&lt;/html&gt;</code>

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以上就介紹了PHP學習-1，包括了方面的內容，希望對PHP教程有興趣的朋友有幫助。