php一些工具函數介紹
- 小云云原創
- 2018-03-02 09:23:531417瀏覽
本文主要和大家分享php一些工具函数介绍，这些都是比较常用的工具函数，希望能帮助到大家。
1.获得毫秒级别的时间戳
public static function get_millisecond()
{
//获取毫秒的时间戳
$time = explode(" ", microtime()); $time = $time[1] . substr($time[0], 2, 3); return $time;
}
2读取文件内容
public static function file_read($file_path)
{
if (file_exists($file_path)) { $fp = fopen($file_path, "r"); $str = fread($fp, filesize($file_path));//指定读取大小，这里把整个文件内容读取出来
$str = str_replace("\r\n", "<br />", $str);
fclose($fp); return $str;
} else { return false;
}
}
3产生随机字符串，不长于32位
public static function get_nonce_number($length = 11)
{
$chars = "0123456789"; $str = ""; for ($i = 0; $i < $length; $i++) { $str .= substr($chars, mt_rand(0, strlen($chars) - 1), 1);
} return $str;
}4.生成订单详情号 默认为16位
public static function get_order_id($length = 16)
{
//见方法一，获得毫秒级别时间戳
$time = self::get_millisecond(); $len = $length - 13; $str = self::get_nonce_number($len); if (strlen($time) != 13) { $orderId = $str . $time . rand(1, 9);
} else { $orderId = $str . $time;
} return $orderId;
}5.随机产生字母和数字（有重复的可能性）
public static function randomkeys($length)
{
$returnStr = ''; $pattern = '1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLOMNOPQRSTUVWXYZ'; for ($i = 0; $i < $length; $i++) { $returnStr .= $pattern{mt_rand(0, 61)}; //生成php随机数
} return $returnStr;
}6.生成6位数验证码
public static function random_code($length = 6)
{
$code = rand(pow(10, ($length - 1)), pow(10, $length) - 1); return "$code";
}7.防sql注入,xss攻击
public static function clean($str)
{
$str = trim($str); $str = strip_tags($str); $str = stripslashes($str); $str = addslashes($str); $str = rawurldecode($str); $str = quotemeta($str); $str = htmlspecialchars($str); return $str;
}8.接收post或者get参数
public static function get_input($name)
{
$request = Yii::$app->request; if (isset($_GET[$name])) { $value = $request->get($name);
} elseif (isset($_POST[$name])) { $value = $request->post($name);
} else { $value = '';
} return $value;
}
9.加密方法
public static function aes_encrypt($str)
{
$privateKey = "私钥文件字符串"; $iv = "公钥文件字符串"; //加密
$encrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_128, $privateKey, $str, MCRYPT_MODE_CBC, $iv);// return urlencode(base64_encode($encrypted));
return base64_encode($encrypted);
}
10.解密方法
public static function aes_decrypt($str)
{
$privateKey = "私钥文件字符串"; $iv = "公钥文件字符串"; $encryptedData = base64_decode($str); $decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $privateKey, $encryptedData, MCRYPT_MODE_CBC, $iv); $decrypted = rtrim($decrypted, "\0"); return $decrypted;
}
11.curl模拟带header头信息的get请求
public static function curl_get($request_url,$session=[])
{
if($session){ $ch = curl_init(); $header = ["session:".$session]; //设置一个你的浏览器agent的header
curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
curl_setopt($ch, CURLOPT_HEADER, 0); //返回response头部信息
curl_setopt($ch, CURLOPT_URL, $request_url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);//不在页面输出 返回数据
$data_json=curl_exec($ch);
curl_close($ch);
}else{ $curl = new Curl(); $data_json = $curl->get($request_url);
} $data = json_decode($data_json, true); return $data;
}
12.curl模拟带header头信息的post方法
public static function curl_post($request_url,$params,$session=""){
if($session){ $curl = curl_init(); //初始化
$header = ["session:".$session]; //设置一个你的浏览器agent的header
curl_setopt($curl,CURLOPT_URL,$request_url); //设置url// curl_setopt($curl,CURLOPT_HTTPAUTH,CURLAUTH_BASIC); //设置http验证方法
curl_setopt($curl,CURLOPT_HTTPHEADER,$header); //设置头信息
curl_setopt($curl,CURLOPT_RETURNTRANSFER,1); //设置curl_exec获取的信息的返回方式
curl_setopt($curl,CURLOPT_POST,1); //设置发送方式为post请求
curl_setopt($curl,CURLOPT_POSTFIELDS,$params); //设置post的数据
curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);//不在页面输出 返回数据
$data_json = curl_exec($curl); if($data_json === false){ echo curl_errno($curl); exit();
}
curl_close($curl);
}else{ $curl = new Curl(); $data_json = $curl->setOption(CURLOPT_POSTFIELDS, http_build_query($params))->post($request_url);
} $data = json_decode($data_json, true); return $data;
}
13.远程下载图片到本地
public static function downloadImage($url, $user_token)
{
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); $file = curl_exec($ch);
curl_close($ch); $filename=$user_token.".jpg"; $path="./images/user/".$filename; self::saveAsImage($file, $path);
} private static function saveAsImage($file, $path)
{
$resource = fopen($path, 'a');
fwrite($resource, $file);
fclose($resource);
}
14.七牛上传图片
public static function actionImg($filename,$filepath)
{
$auth = new Auth(trim(Yii::$app->params["qiniu_params"]["accessKey"]),
trim(Yii::$app->params["qiniu_params"]["secretKey"])); $uploadMgr = new UploadManager(); $token = $auth->uploadToken(trim(Yii::$app->params["qiniu_params"]["upload_path"])); list($succ, $fail) = $uploadMgr->putFile($token, $filename, $filepath
); $url = Yii::$app->params["qiniu_params"]["picture_url"] . "/" . $succ["key"]; return $url;
}
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