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excelfunction 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 '';

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)