站長資訊網PHP實例方法的例子有：1、PHPExcel讀取Excel，2、獲取文本中首張圖片地址；3、將圖片保存到本地；4、返回JSON數據；5、【var_dump】函數改寫；6、圖片轉為base64格式等等。
PHP實例方法的例子有：
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PHPExcel 讀取Excel
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獲取文本中首張圖片地址
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將圖片保存到本地
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返回JSON數據
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var_dump 函數改寫
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圖片轉為base64格式
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使用curl 實現get請求
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使用curl 實現post請求
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簡單的xml轉數組方法
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Utf-8轉統一碼
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字符串轉統一編碼
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獲取IP地址
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創建隨機字符串
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根據生日獲取年齡
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根據經緯度計算距離
PHPExcel 讀取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 $excelData; }
獲取文本中首張圖片地址
function getFirstPic($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); } } }
將圖片保存到本地
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,'/')){ $save_dir.='/'; } //創建保存目錄 if(!file_exists($save_dir)&&!mkdir($save_dir,0777,true)){ return array('file_name'=>'','save_path'=>'','error'=>5); } //獲取遠程文件所采用的方法 if($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.$filename,'error'=>0); }
返回JSON數據
function show($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 函數改寫
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; }
圖片轉為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 $base64_image; }
使用curl 實現get請求
function httpGet($url) { $curl = curl_init(); curl_setopt($curl, CURLOPT_RETURNTRANSFER, true); curl_setopt($curl, CURLOPT_TIMEOUT, 500); curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, true); //這個是的ssl校驗，需要驗證 curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, true); // curl_setopt($curl, CURLOPT_URL, $url); $res = curl_exec($curl); curl_close($curl); return $res; }
使用curl 實現post 請求
function httpPost($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( $ch, CURLOPT_POST, 1); //設置為POST方式 curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch , CURLOPT_POSTFIELDS , $post_data); $rst = curl_exec( $ch ); curl_close( $ch ); return $rst; }
簡單的xml轉數組方法
function simplexml_to_array($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 $attr; } return FALSE; }
Utf-8轉統一碼
function utf8_to_unicode($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 $n; } }
字符串轉統一編碼
function str_to_unicode_word($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); }
獲取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 $realip; }
創建隨機字符串
function createNonceStr($length = 16) { $chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"; $str = ""; for ($i = 0; $i < $length; $i++) { $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1); } return $str; }
根據生日獲取年齡
function get_age($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 $age; }else{ return "未知"; } }
根據經緯度計算距離
function getDistance($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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