PHP实例方法有哪些例子

coldplay.xixi

发布时间：2020-10-06 10:49:06

2838人浏览过

来源于php中文网

原创

PHP实例方法的例子有：1、PHPExcel读取Excel，2、获取文本中首张图片地址；3、将图片保存到本地；4、返回JSON数据；5、【var_dump】函数改写；6、图片转为base64格式等等。

PHP实例方法有哪些例子

PHP实例方法的例子有：

PHPExcel 读取Excel
获取文本中首张图片地址
将图片保存到本地

立即学习“PHP免费学习笔记（深入）”；
返回JSON数据
var_dump 函数改写
图片转为base64格式
使用curl 实现get请求
使用curl 实现post请求
简单的xml转数组方法
Utf-8转统一码
字符串转统一编码
获取IP地址
创建随机字符串
根据生日获取年龄
根据经纬度计算距离

PHPExcel 读取excel

Freeway

Freeway 是一个功能丰富的开源电子商务平台,它提供的不仅仅是买卖商品而是扩展到以一些奇特的方式来销售商品.这些都很容易配置.例如:你可以决定是否采用其提供的一些技巧来销售商品,或只用普通的方法来销售.另外你将会发现 Freeway有着丰富的CRM 特点和易于使用且简单的CMS特点.

下载

function readExcel($filename, $encode = 'utf-8')
{
//    import("ORG.Util.PHPExcel.IOFactory");
    import("Org/Util/PHPExcel");
    if (strpos($filename, "xlsx")) {
        $objReader = PHPExcel_IOFactory::createReader('Excel2007');
    } else {
        $objReader = PHPExcel_IOFactory::createReader('Excel5');
    }
    $objReader->setReadDataOnly(true);
    $objPHPExcel = $objReader->load($filename);
    $objWorksheet = $objPHPExcel->getActiveSheet();
    $highestRow = $objWorksheet->getHighestRow();
    $highestColumn = $objWorksheet->getHighestColumn();
    $highestColumnIndex = PHPExcel_Cell::columnIndexFromString($highestColumn);
    $excelData = array();
    for ($row = 1; $row <= $highestRow; $row++) {
        if ((string)$objWorksheet->getCellByColumnAndRow(0, $row)->getValue() == "") continue;
        for ($col = 0; $col < $highestColumnIndex; $col++) {
            $value = (string)$objWorksheet->getCellByColumnAndRow($col, 1)->getValue();
            if ($value == "") {
                continue;
            }
            $excelData[$row - 1][] = (string)$objWorksheet->getCellByColumnAndRow($col, $row)->getValue();
        }
    }
    return $excelData;
}

获取文本中首张图片地址

function getFirstPic($content){
    if(preg_match_all("/(src)=([\"|']?)([^ \"'>]+\.(gif|jpg|jpeg|bmp|png))\\2/i", $content, $matches)){
        $str=$matches[3][0];
        if(preg_match('/\/ueditor\/php\/upload\/image/',$str)){
            return $str1=substr($str,6);
        }
    }
}

将图片保存到本地

立即学习“PHP免费学习笔记（深入）”；

function getImage($url,$save_dir='',$filename='',$type=1){
    if(trim($url)==''){
        return array('file_name'=>'','save_path'=>'','error'=>1);
    }
    if(trim($save_dir)==''){
        $save_dir='./';
    }
    if(trim($filename)==''){//保存文件名
        $ext = strrchr($url,'.');
        if($ext!='.gif'&&$ext!='.jpg'){
            return array('file_name'=>'','save_path'=>'','error'=>3);
        }
        $filename=time().$ext;
    }
    if(0!==strrpos($save_dir,'/')){
        $save_dir.='/';
    }
    //创建保存目录
    if(!file_exists($save_dir)&&!mkdir($save_dir,0777,true)){
        return array('file_name'=>'','save_path'=>'','error'=>5);
    }
    //获取远程文件所采用的方法
    if($type){
        $ch=curl_init();
        $timeout=5;
        curl_setopt($ch,CURLOPT_URL,$url);
        curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);
        curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,$timeout);
        $img=curl_exec($ch);
        curl_close($ch);
    }
    else{
        ob_start();
        readfile($url);
        $img=ob_get_contents();
        ob_end_clean();
    }
    $size=strlen($img);
    echo $size;
    //文件大小
    $fp2=fopen($save_dir.$filename,'a');
    fwrite($fp2,$img);
    fclose($fp2);
    unset($img,$url);
    return array('file_name'=>$filename,'save_path'=>$save_dir.$filename,'error'=>0);
}

返回JSON数据

function show($status, $msg, $closeCurrent=false, $data=array()){
    $tmpArr = array(
        'statusCode' => $status,
        'message'    => $msg,
        'closeCurrent' => $closeCurrent,
    );
    $tmpArr = array_merge($tmpArr, $data);
    exit(json_encode($tmpArr));
}

var_dump 函数改写

function lyl_dump($content){
    header("Content-type:text/html;charset=utf-8");
    echo '';
    echo "";
    var_dump($content);
    echo "";
    die;
}
图片转为base64格式
function base64EncodeImage ($image_file) {
    if(!file_exists($image_file)){
        return false;
    }
    $image_info = getimagesize($image_file);
    $image_data = fread(fopen($image_file, 'r'), filesize($image_file));
    $base64_image = chunk_split(base64_encode($image_data));
    return $base64_image;
}
使用curl 实现get请求
function httpGet($url) {
    $curl = curl_init();
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($curl, CURLOPT_TIMEOUT, 500);
    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, true); //这个是的ssl校验，需要验证
    curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, true); //
    curl_setopt($curl, CURLOPT_URL, $url);
    $res = curl_exec($curl);
    curl_close($curl);
    return $res;
}
使用curl 实现post 请求
function httpPost($url,$post_data){
    $curl = curl_init();
    $post_data = json_encode($post_data);
    curl_setopt($ch , CURLOPT_URL , $url);
    curl_setopt($ch , CURLOPT_HEADER , 0 );
    curl_setopt( $ch, CURLOPT_POST, 1);          //设置为POST方式
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch , CURLOPT_POSTFIELDS , $post_data);
    $rst = curl_exec( $ch );
    curl_close( $ch );
    return $rst;
}
简单的xml转数组方法
function simplexml_to_array($simplexml_obj, $array_tags = array(), $strip_white = 1)
{
    if ($simplexml_obj) {
        if (count($simplexml_obj) == 0)
            return $strip_white ? trim((string)$simplexml_obj) : (string)$simplexml_obj;
        $attr = array();
        foreach ($simplexml_obj as $k => $val) {
            if (!empty($array_tags) && in_array($k, $array_tags)) {
                $attr[] = simplexml_to_array($val, $array_tags, $strip_white);
            } else {
                $attr[$k] = simplexml_to_array($val, $array_tags, $strip_white);
            }
        }
        return $attr;
    }
    return FALSE;
}
Utf-8转统一码
function utf8_to_unicode($char)
{
    switch (strlen($char)) {
        case 1:
            return ord($char);
        case 2:
            $n = (ord($char[0]) & 0x3f) << 6;
            $n += ord($char[1]) & 0x3f;
            return $n;
        case 3:
            $n = (ord($char[0]) & 0x1f) << 12;
            $n += (ord($char[1]) & 0x3f) << 6;
            $n += ord($char[2]) & 0x3f;
            return $n;
        case 4:
            $n = (ord($char[0]) & 0x0f) << 18;
            $n += (ord($char[1]) & 0x3f) << 12;
            $n += (ord($char[2]) & 0x3f) << 6;
            $n += ord($char[3]) & 0x3f;
            return $n;
    }
}
字符串转统一编码
function str_to_unicode_word($str,$depart=' ')
{
    $arr = array();
    $str_len = mb_strlen($str,'utf-8');
    for($i = 0;$i < $str_len;$i++)
    {
        $s = mb_substr($str,$i,1,'utf-8');
        if($s != ' ' && $s != '　')
        {
            $arr[] = 'ux'.utf8_to_unicode($s);
        }
    }
    return implode($depart,$arr);
}
获取IP地址
function getIP()
{
    static $realip;
    if (isset($_SERVER)) {
        if (isset($_SERVER["HTTP_X_FORWARDED_FOR"])) {
            $realip = $_SERVER["HTTP_X_FORWARDED_FOR"];
        } else if (isset($_SERVER["HTTP_CLIENT_IP"])) {
            $realip = $_SERVER["HTTP_CLIENT_IP"];
        } else {
            $realip = $_SERVER["REMOTE_ADDR"];
        }
    } else {
        if (getenv("HTTP_X_FORWARDED_FOR")) {
            $realip = getenv("HTTP_X_FORWARDED_FOR");
        } else if (getenv("HTTP_CLIENT_IP")) {
            $realip = getenv("HTTP_CLIENT_IP");
        } else {
            $realip = getenv("REMOTE_ADDR");
        }
    }
    return $realip;
}
创建随机字符串
function createNonceStr($length = 16)
{
    $chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
    $str = "";
    for ($i = 0; $i < $length; $i++) {
        $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
    }
    return $str;
}
根据生日获取年龄
function get_age($birthday){
    if($birthday){
        list($y1,$m1,$d1) = explode("-",date("Y-m-d",$birthday));
        list($y2,$m2,$d2) = explode("-",date("Y-m-d",time()));
        $age = $y2-$y1;
        if(intval($m2.$d2) < intval($m1.$d1)) {$age -= 1;}
        return $age;
    }else{
        return "未知";
    }
}
根据经纬度计算距离
function getDistance($lat1, $lng1, $lat2, $lng2)
{
    $earthRadius = 6367000; 
    $lat1 = ($lat1 * pi() ) / 180;
    $lng1 = ($lng1 * pi() ) / 180;
    $lat2 = ($lat2 * pi() ) / 180;
    $lng2 = ($lng2 * pi() ) / 180;
    $calcLongitude = $lng2 - $lng1;
    $calcLatitude = $lat2 - $lat1;
    $stepOne = pow(sin($calcLatitude / 2), 2) + cos($lat1) * cos($lat2) * pow(sin($calcLongitude / 2), 2);
    $stepTwo = 2 * asin(min(1, sqrt($stepOne)));
    $calculatedDistance = $earthRadius * $stepTwo;
    return round($calculatedDistance);
}
相关免费学习推荐：php编程（视频）