1.对_GET,_POST 参数进行转义
/**
* 递归方式的对变量中的特殊字符进行转义
*/
function addslashes_deep($value)
{
if(empty($value))
{
return $value;
}
else
{
return is_array($value) ? array_map('addslashes_deep', $value) : addslashes($value);
}
}
/* 对用户传入的变量进行转义操作。*/
if (!get_magic_quotes_gpc())
{
if (!empty($_GET))
{
$_GET = addslashes_deep($_GET);
}
if (!empty($_POST))
{
$_POST = addslashes_deep($_POST);
}
$_COOKIE = addslashes_deep($_COOKIE);
$_REQUEST = addslashes_deep($_REQUEST);
}
2.获取文件后缀名,并判断是否合法
/**
* 获取文件后缀名,并判断是否合法
*
* @param string $file_name
* @param array $allow_type
* @return blob
*/
function get_file_suffix($file_name, $allow_type = array())
{
//$file_suffix = strtolower(array_pop(explode('.', $file_name)));
$file_suffix = strtolower(strrchr($file_name,'.'));
if (empty($allow_type))
{
return $file_suffix;
}
else
{
if (in_array($file_suffix, $allow_type))
{
return true;
}
else
{
return false;
}
}
}
var_dump(get_file_suffix(('a.txt'),array('.gif','.bmp')));
3.验证输入的邮件地址是否合法
/**
* 验证输入的邮件地址是否合法
*
* @access public
* @param string $email 需要验证的邮件地址
*
* @return bool
*/
function is_email($user_email)
{
$chars = "/^[a-z0-9]+@[a-z0-9]+\.[a-z0-9]+$/i";
if (strpos($user_email, '@') !== false && strpos($user_email, '.') !== false)
{
if (preg_match($chars, $user_email))
{
return true;
}
else
{
return false;
}
}
else
{
return false;
}
}
var_dump(is_email('123@qq.cerom'));
4.电话号码替换*
/***
phone replace 13049638170 13049****70;
*/
function replacephone($phone)
{
$patt="/(1[0-9]{2})[0-9]{5}([0-9]{3})/";
$replace = "$1****$2";
$phone = preg_replace($patt,$replace, $phone);
echo $phone;
}
或
echo substr_replace($phone,'****',3,4);
5.无限分级
/**无限级分类***/
$area = array(
0=>array('cat_id'=>1,'cat_name'=>'北京市','parent_id'=>0),
1=>array('cat_id'=>2,'cat_name'=>'馆陶县','parent_id'=>5),
2=>array('cat_id'=>3,'cat_name'=>'海淀区','parent_id'=>1),
3=>array('cat_id'=>4,'cat_name'=>'朝阳区','parent_id'=>1),
4=>array('cat_id'=>5,'cat_name'=>'邯郸市','parent_id'=>6),
5=>array('cat_id'=>6,'cat_name'=>'河北省','parent_id'=>0),
);
//由父辈向下找子孙
function catsort($arr,$parent_id = 0,$len = 0)
{
static $res = array();
foreach ($arr as $key => $val) {
if($val['parent_id'] == $parent_id)
{
$val['len'] = $len + 1;
$res[] = $val;
catsort($arr,$val['cat_id'],$val['len']);
}
}
return $res;
}
//由父辈向下找子孙
function catsort2($arr,$parent_id = 0,$len = 0)
{
$res = array();
foreach ($arr as $key => $val) {
if($val['upid'] == $parent_id)
{
$val['children'] = catsort2($arr,$val['id']);
$res[] = $val;
}
}
return $res;
}
//由子孙像父辈找
function tree($arr,$cat_id = 4)
{
static $tree = array();
foreach ($arr as $key => $val) {
if($val['cat_id'] == $cat_id)
{
$tree[] = $val;
tree($arr,$val['parent_id']);
}
}
return $tree;
}
6.php下载远程图片
function dlPicuter($url,$path) {
if(!is_dir($path))
{
mkdir($path,0755,true);
}
if(preg_match('/https:\/\/.*?\.png/is',$url))
{
$save_filename = date('YmdHis').'.jpg';
try{
$content = @file_get_contents($url);
if($content != "")
{
file_put_contents($path.$save_filename,$content);
return $path.$save_filename;
}
else {
return '';
}
}catch(Exception $e)
{
}
}
}
echo dlPicuter('https://www.baidu.com/img/bdlogo.png','./pp/');
7.gbk-uft8转码
///php UFT-8 ---> GBK;
$html = mb_convert_encoding($html, 'GBK', 'UTF-8');
///gbk -->utf-8
iconv("GBK","UTF-8",$html);
8.中文如乱码截取
function jiequ($str,$len="24")
{
return mb_substr($str,0,$len,"UTF-8");
}
9.过滤非法参数
//过滤非法的参数
function parts(array $array, array $keys)
{
foreach (array_keys($array) as $key) {
if (!in_array($key, $keys)) {
unset($array[$key]);
}
}
return $array;
}
//parts($_POST,['id','name','password','insertime']);
10.判断是否缺少必要的参数
//判断是否缺少必要的参数
function requireds(array $array, array $keys, $strictMode = false)
{
foreach ($keys as $key) {
if (!array_key_exists($key, $array)) {
return false;
}
if ($strictMode && (is_null($array[$key]) || $array[$key] === "" || $array[$key] === 0)) {
return false;
}
}
return true;
}
11.curl 的POST与GET
/**
* Send a POST requst using cURL
* @param string $url to request
* @param array $post values to send
* @param array $options for cURL
* @return string
*/
function curl_post($url, array $post = NULL, array $options = array())
{
$defaults = array(
CURLOPT_POST => 1,
CURLOPT_HEADER => 0,
CURLOPT_URL => $url,
CURLOPT_FRESH_CONNECT => 1,
CURLOPT_RETURNTRANSFER => 1,
CURLOPT_FORBID_REUSE => 1,
CURLOPT_TIMEOUT => 4,
CURLOPT_POSTFIELDS => http_build_query($post)
);
$ch = curl_init();
curl_setopt_array($ch, ($options + $defaults));
if( ! $result = curl_exec($ch))
{
trigger_error(curl_error($ch));
}
curl_close($ch);
return $result;
}
/**
* Send a GET requst using cURL
* @param string $url to request
* @param array $get values to send
* @param array $options for cURL
* @return string
*/
function curl_get($url, array $get = NULL, array $options = array())
{
$defaults = array(
CURLOPT_URL => $url. (strpos($url, '?') === FALSE ? '?' : ''). http_build_query($get),
CURLOPT_HEADER => 0,
CURLOPT_RETURNTRANSFER => TRUE,
CURLOPT_TIMEOUT => 4
);
$ch = curl_init();
curl_setopt_array($ch, ($options + $defaults));
if( ! $result = curl_exec($ch))
{
trigger_error(curl_error($ch));
}
curl_close($ch);
return $result;
}
12.openssl对文件／字符串加密解密
class Mycrypt{
private $passwd = ''; //字符串长度必须是13位
private $sign = ''; //字符长度必须是16位
public function __construct($passwd = 'sjhfjewQ!dlfg',$sign = 'JAqwo12U!@askdas')
{
$this->passwd = $passwd;
$this->sign = $sign;
}
private function sslPrm()
{
return array($this->passwd,$this->sign,"aes-256-cbc");
}
public function sslEnc($msg)
{
list ($pass, $iv, $method)= $this->sslPrm();
if(function_exists('openssl_encrypt'))
{
return urlencode(openssl_encrypt(urlencode($msg), $method, $pass, false, $iv));
}
else
{
return urlencode(exec("echo \"".urlencode($msg)."\" | openssl enc -".urlencode($method)." -base64 -nosalt -K ".bin2hex($pass)." -iv ".bin2hex($iv)));
}
}
public function sslDec($msg)
{
list ($pass, $iv, $method) = $this->sslPrm();
if(function_exists('openssl_decrypt'))
{
return trim(urldecode(openssl_decrypt(urldecode($msg), $method, $pass, false, $iv)));
}
else
{
return trim(urldecode(exec("echo \"".urldecode($msg)."\" | openssl enc -".$method." -d -base64 -nosalt -K ".bin2hex($pass)." -iv ".bin2hex($iv))));
}
}
}
13.加密解密
function encryptDecrypt($string, $key="password", $decrypt="DECODE"){
if($decrypt){
$decrypted = rtrim(mcrypt_decrypt(MCRYPT_RIJNDAEL_256, md5($key), base64_decode($string), MCRYPT_MODE_CBC, md5(md5($key))), "12");
return $decrypted;
}else{
$encrypted = base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, md5($key), $string, MCRYPT_MODE_CBC, md5(md5($key))));
return $encrypted;
}
}
- 导出CSV
public function exportToCsv($fileName = '', $headArr = [], $data = [])
{
@ob_end_clean(); //清除内存
ob_start();
@header("Content-Type: text/csv");
@header("Content-Disposition:filename=".$fileName.'.csv');
$fp=fopen('php://output','w');
fwrite($fp, chr(0xEF).chr(0xBB).chr(0xBF));
fputcsv($fp,$headArr);
$index = 0;
foreach ($data as $item) {
if($index==1000){ //每次写入1000条数据清除内存
$index=0;
ob_flush();//清除内存
flush();
}
$index++;
fputcsv($fp,$item);
}
@ob_flush();
flush();
ob_end_clean();
return;
}
