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PHP开发常用的10段代码

  • 时间:2018-02-28 17:11
  • 发布:武汉PHP培训
  • 来源:互联网

    1、使用PHP Mail函数发送Email
    $to = "viralpatel.net@gmail.com";
    $subject = "VIRALPATEL.net";
    $body = "Body of your message here you can use HTML too. e.g. ﹤br﹥ ﹤b﹥ Bold ﹤/b﹥";
    $headers = "From: Peter\r\n";
    $headers .= "Reply-To: info@yoursite.com\r\n";
    $headers .= "Return-Path: info@yoursite.com\r\n";
    $headers .= "X-Mailer: PHP5\n";
    $headers .= 'MIME-Version: 1.0' . "\n";
    $headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
    mail($to,$subject,$body,$headers);
    ?﹥
    2、PHP中的64位编码和解码
    function base64url_encode($plainText) {
    $base64 = base64_encode($plainText);
    $base64url = strtr($base64, '+/=', '-_,');
    return $base64url;
    }
    function base64url_decode($plainText) {
    $base64url = strtr($plainText, '-_,', '+/=');
    $base64 = base64_decode($base64url);
    return $base64;
    }
    3、获取远程IP地址
    function getRealIPAddr()
    {
    if (!empty($_SERVER['HTTP_CLIENT_IP'])) //check ip from share internet
    {
    $ip=$_SERVER['HTTP_CLIENT_IP'];
    }
    elseif (!empty($_SERVER['HTTP_X_FORWARDED_FOR'])) //to check ip is pass from proxy
    {
    $ip=$_SERVER['HTTP_X_FORWARDED_FOR'];
    }
    else
    {
    $ip=$_SERVER['REMOTE_ADDR'];
    }
    return $ip;
    }
    4、 日期格式化
    function checkDateFormat($date)
    {
    //match the format of the date
    if (preg_match ("/^([0-9]{4})-([0-9]{2})-([0-9]{2})$/", $date, $parts))
    {
    //check weather the date is valid of not
    if(checkdate($parts[2],$parts[3],$parts[1]))
    return true;
    else
    return false;
    }
    else
    return false;
    }
    5、验证Email
    $email = $_POST['email'];
    if(preg_match("~([a-zA-Z0-9!#$%&'*+-/=?^_`{|}~])@([a-zA-Z0-9-]).
    ([a-zA-Z0-9]{2,4})~",$email)) {
    echo 'This is a valid email.';
    } else{
    echo 'This is an invalid email.';
    }
    6、在PHP中轻松解析XML
    //this is a sample xml string
    $xml_string="﹤?xml version='1.0'?﹥
    ﹤moleculedb﹥
    ﹤molecule name='Benzine'﹥
    ﹤symbol﹥ben﹤/symbol﹥
    ﹤code﹥A﹤/code﹥
    ﹤/molecule﹥
    ﹤molecule name='Water'﹥
    ﹤symbol﹥h2o﹤/symbol﹥
    ﹤code﹥K﹤/code﹥
    ﹤/molecule﹥
    ﹤/moleculedb﹥";
    //load the xml string using simplexml function
    $xml = simplexml_load_string($xml_string);
    //loop through the each node of molecule
    foreach ($xml-﹥molecule as $record)
    {
    //attribute are accessted by
    echo $record['name'], ' ';
    //node are accessted by -﹥ operator
    echo $record-﹥symbol, ' ';
    echo $record-﹥code, '﹤br /﹥';

    }

武汉PHP培训

    7、数据库连接
    ﹤?php
    if(basename(__FILE__) == basename($_SERVER['PHP_SELF'])) send_404();
    $dbHost = "localhost"; //Location Of Database usually its localhost
    $dbUser = "xxxx"; //Database User Name
    $dbPass = "xxxx"; //Database Password
    $dbDatabase = "xxxx"; //Database Name
    $db = mysql_connect("$dbHost", "$dbUser", "$dbPass") or
    die ("Error connecting to database.");
    mysql_select_db("$dbDatabase", $db) or die ("Couldn't select the database.");
    # This function will send an imitation 404 page if the user
    # types in this files filename into the address bar.
    # only files connecting with in the same directory as this
    # file will be able to use it as well.
    function send_404()
    {
    header('HTTP/1.x 404 Not Found');
    print '﹤!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"﹥'."n".
    '﹤html﹥﹤head﹥'."n".
    '﹤title﹥404 Not Found﹤/title﹥'."n".
    '﹤/head﹥﹤body﹥'."n".
    '﹤h1﹥Not Found﹤/h1﹥'."n".
    '﹤p﹥The requested URL '.
    str_replace(strstr($_SERVER['REQUEST_URI'], '?'), '', $_SERVER['REQUEST_URI']).
    ' was not found on this server.﹤/p﹥'."n".
    '﹤/body﹥﹤/html﹥'."n";
    exit;
    }
    # In any file you want to connect to the database,
    # and in this case we will name this file db.php
    # just add this line of php code (without the pound sign):
    # include"db.php";
    ?﹥
    8、创建和解析JSON数据
    $json_data = array ('id'=﹥1,'name'=﹥"rolf",'country'=﹥'russia',
    "office"=﹥array("google","oracle"));
    echo json_encode($json_data);
    9、处理MySQL时间戳
    $query = "select UNIX_TIMESTAMP(date_field) as mydate
    from mytable where 1=1";
    $records = mysql_query($query) or die(mysql_error());
    while($row = mysql_fetch_array($records))
    {
    echo $row;
    }
    10、解压缩Zip文件
    ﹤?php
    function unzip($location,$newLocation){
    if(exec("unzip $location",$arr)){
    mkdir($newLocation);
    for($i = 1;$i﹤ count($arr);$i++){
    $file = trim(preg_replace("~inflating: ~","",$arr[$i]));
    copy($location.'/'.$file,$newLocation.'/'.$file);
    unlink($location.'/'.$file);
    }
    return TRUE;
    }else{
    return FALSE;
    }
    }
    ?﹥
    //Use the code as following:
    ﹤?php
    include 'functions.php';
    if(unzip('zipedfiles/test.zip','unziped/myNewZip'))
    echo 'Success!';
    else
    echo 'Error';
    ?﹥
    PHP常用功能:
    1.PHP字符串
    字符串声明 变量=''或者""
    $str = 'Hello PHP';
    echo $str;
    strpos 计算字符在字符串中的位置(从0开始)
    $str = 'Hello PHP';
    echo strpos($str,'o');  //计算字符在字符串中的位置
    echo '<br/>';
    echo strpos($str,'PH');
    2.substr 截取字符串
    $str = 'Hello PHP';
    //截取字符串
    $str1 = substr($str,2,3); //从2位置开始截取,截取长度为3的字符串
    echo $str1;不传入长度参数的话,会从指定位置一直截取到字符串的末尾
    str_split 分割字符串  固定长度的分割(默认长度为1)
    $str = 'Hello PHP';
    //分割字符串
    $result = str_split($str); //将结果保存到一个数组中
    print_r($result); //使用print_r输入一个数组
    echo '<br/>';
    $result1 = str_split($str,2);
    print_r($result1);explode(分割字符,待分割的字符串) 按照空格进行分割
    $str = 'Hello PHP Java C# C++';
    $result = explode(' ',$str);
    print_r($result);
    3.字符串的连接
    $str = 'Hello PHP Java C# C++';
    //字符串的连接
    $num = 100;
    $str1 = $str.'<br/>Objective-C '.$num;
    echo $str1;
    echo '<br/>';
    $str2 = "$str<br/>Objective-C $num"; //另一中简便的写法

    echo $str2;

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