PHP实例方法有哪些例子

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

• 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

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

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($content){     header("Content-type:text/html;charset=utf-8");     echo '<meta content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0" name="viewport" />';     echo "<pre>";     var_dump($content);     echo "<pre/>";     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); }

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