PHP常见方法封装总结

目录

• 1.get请求
• 2.post请求
• 3.随机字符串
• 4.返回json数据
• 5.数据过滤
• 6.重定向
• 7.获取客户端ip

1.get请求

function get_curl($url, $timeout = 5) {
    $ch = curl_init();
    curl_setopt($ch,CURLOPT_URL,$url);
    curl_setopt($ch,CURLOPT_RETURNTRANSFER,true );
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
    $result = curl_exec( $ch );
    curl_close($ch);
    return $result;
}

2.post请求

function post_curl($url, $data, $timeout = 5) {
    $ch = curl_init();
    curl_setopt($ch,CURLOPT_URL,$url);
    curl_setopt($ch,CURLOPT_RETURNTRANSFER,true );
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch,CURLOPT_POSTFIELDS,$data);
    $result = curl_exec( $ch );
    curl_close($ch);
    return $result;
}

3.随机字符串

function random_str($len=10, $type=1){
    switch($type){
        case 2:
            $chars=\'0123456789\';
            break;
        case 3:
            $chars=\'abcdefghijklmnopqrstuvwxyz\';
            break;
        case 4:
            $chars=\'ABDEFGHIJKLMNOPQRSTUVWXYZ\';
            break;
        case 5:
            $chars=\'abcdefghijklmnopqrstuvwxyzABDEFGHIJKLMNOPQRSTUVWXYZ\';
            break;
        case 6:
            $chars=\'abcdefghijklmnopqrstuvwxyz0123456789\';
            break;
        default:
            $chars=\'abcdefghijklmnopqrstuvwxyzABDEFGHIJKLMNOPQRSTUVWXYZ0123456789\';
            break;
    }
 
    $str = \'\';
    for ( $i = 0; $i <$len; $i++ ){
        $str .= $chars[ mt_rand(0, strlen($chars) - 1) ];
    }
    return $str;
}

4.返回json数据

function json_back($data, $is_exit = true) {
    $callback = $_GET[\'callback\'] ?? \'\';
    if ($callback) {
        echo \'\' . $callback . \"(\" . json_encode($data, JSON_UNESCAPED_UNICODE) . \")\";
    } else {
        echo json_encode($data, JSON_UNESCAPED_UNICODE);
    }
    if ($is_exit) exit();
}

5.数据过滤

function check_data($data){
    if(is_array($data)){
        foreach($data as $key => $v){
            $data[$key] = $this->check_data($v);
        }
    }else{
        $data = trim($data);
        $data = strip_tags($data);
        $data = htmlspecialchars($data);
        $data = addslashes($data);
    }
    return $data;
}

6.重定向

function redirect($url = \'https://blog.csdn.net/weixin_41635750\'){
    if (!headers_sent()) {
        header(\"Location: {$url}\");
        exit();
    }else{
        $str = \"<meta http-equiv=\'Refresh\' content=\'0;URL={$url}\'>\";
        exit($str);
    }
}

7.获取客户端ip

function get_real_ip() {
    if(@$_SERVER[\"HTTP_ALI_CDN_REAL_IP\"]){
        $ip = $_SERVER[\"HTTP_ALI_CDN_REAL_IP\"];
    }
    elseif (@$_SERVER[\"HTTP_X_FORWARDED_FOR\"] ?: false) {
        $ip  = $_SERVER[\"HTTP_X_FORWARDED_FOR\"];
        $ips = explode(\',\', $ip);
        $ip  = $ips[0];
    } elseif (@$_SERVER[\"HTTP_CDN_SRC_IP\"] ?: false) {
        $ip = $_SERVER[\"HTTP_CDN_SRC_IP\"];
    } elseif (getenv(\'HTTP_CLIENT_IP\')) {
        $ip = getenv(\'HTTP_CLIENT_IP\');
    } elseif (getenv(\'HTTP_X_FORWARDED\')) {
        $ip = getenv(\'HTTP_X_FORWARDED\');
    } elseif (getenv(\'HTTP_FORWARDED_FOR\')) {
        $ip = getenv(\'HTTP_FORWARDED_FOR\');
    } elseif (getenv(\'HTTP_FORWARDED\')) {
        $ip = getenv(\'HTTP_FORWARDED\');
    } else {
        $ip = $_SERVER[\'REMOTE_ADDR\'];
    }
    $ip = str_replace(array(\'::ffff:\', \'[\', \']\'), array(\'\', \'\', \'\'), $ip);
 
    return $ip;
}