/**
* 判断文件或文件夹是否可写
* @param string $file 文件或目录
* @return bool
*/
function is_really_writable($file)
{
if (DIRECTORY_SEPARATOR === '/') {
return is_writable($file);
}
if (is_dir($file)) {
$file = rtrim($file, '/') . '/' . md5(mt_rand());
if (($fp = @fopen($file, 'ab')) === false) {
return false;
}
fclose($fp);
@chmod($file, 0755);
@unlink($file);
return true;
} elseif (!is_file($file) or ($fp = @fopen($file, 'ab')) === false) {
return false;
}
fclose($fp);
return true;
}
/**
* 返回打印数组结构
* @param string $var 数组
* @param string $indent 缩进字符
* @return string
*/
function var_export_short($var, $indent = "")
{
switch (gettype($var)) {
case "string":
return '"' . addcslashes($var, "\\\$\"\r\n\t\v\f") . '"';
case "array":
$indexed = array_keys($var) === range(0, count($var) - 1);
$r = [];
foreach ($var as $key => $value) {
$r[] = "$indent "
. ($indexed ? "" : var_export_short($key) . " => ")
. var_export_short($value, "$indent ");
}
return "[\n" . implode(",\n", $r) . "\n" . $indent . "]";
case "boolean":
return $var ? "TRUE" : "FALSE";
default:
return var_export($var, true);
}
}
/**
*图片裁剪
*/
function image_resize($src_file, $dst_file, $new_width, $new_height)
{
$new_width = intval($new_width);
$new_height = intval($new_width);
if ($new_width < 1 || $new_height < 1) {
echo "params width or height error !";
exit();
}
if (!file_exists($src_file)) {
echo $src_file .
" is not exists !";
exit();
}
// 图像类型
$type = exif_imagetype($src_file);
$support_type = array(IMAGETYPE_JPEG, IMAGETYPE_PNG, IMAGETYPE_GIF);
if (!in_array($type, $support_type, true)) {
echo "this type of image does not support! only support jpg , gif or png";
exit();
}
//Load image
switch ($type) {
case IMAGETYPE_JPEG:
$src_img = imagecreatefromjpeg($src_file);
break;
case IMAGETYPE_PNG:
$src_img = imagecreatefrompng($src_file);
break;
case IMAGETYPE_GIF:
$src_img = imagecreatefromgif($src_file);
break;
default:
echo "Load image error!";
exit();
}
$w = imagesx($src_img);
$h = imagesy($src_img);
$ratio_w = 1.0 * $new_width / $w;
$ratio_h = 1.0 * $new_height / $h;
$ratio = 1.0;
// 生成的图像的高宽比原来的都小,或都大 ,原则是 取大比例放大,取大比例缩小(缩小的比例就比较小了)
if (($ratio_w < 1 && $ratio_h < 1) || ($ratio_w > 1 && $ratio_h > 1)) {
if ($ratio_w < $ratio_h) {
$ratio = $ratio_h;
// 情况一,宽度的比例比高度方向的小,按照高度的比例标准来裁剪或放大
} else {
$ratio = $ratio_w;
}
// 定义一个中间的临时图像,该图像的宽高比 正好满足目标要求
$inter_w = (int)($new_width / $ratio);
$inter_h = (int)($new_height / $ratio);
$inter_img = imagecreatetruecolor($inter_w, $inter_h);
// var_dump($inter_img);
imagecopy($inter_img, $src_img, 0, 0, 0, 0, $inter_w, $inter_h);
// 生成一个以最大边长度为大小的是目标图像$ratio比例的临时图像
// 定义一个新的图像
ini_set('memory_limit', '8M'); //更改PHP的内存限制
$new_img = imagecreatetruecolor($new_width, $new_height);
//var_dump($new_img);exit();
imagecopyresampled($new_img, $inter_img, 0, 0, 0, 0, $new_width, $new_height, $inter_w, $inter_h - 7);
switch ($type) {
case IMAGETYPE_JPEG:
// 存储图像
imagejpeg($new_img, $dst_file, 100);
break;
case IMAGETYPE_PNG:
imagepng($new_img, $dst_file, 100);
break;
case IMAGETYPE_GIF:
imagegif($new_img, $dst_file, 100);
break;
default:
break;
}
} else {
// end if 1
// 2 目标图像 的一个边大于原图,一个边小于原图 ,先放大平普图像,然后裁剪
// =if( ($ratio_w < 1 && $ratio_h > 1) || ($ratio_w >1 && $ratio_h <1) )
$ratio = $ratio_h > $ratio_w ? $ratio_h : $ratio_w;
//取比例大的那个值
// 定义一个中间的大图像,该图像的高或宽和目标图像相等,然后对原图放大
$inter_w = (int)($w * $ratio);
$inter_h = (int)($h * $ratio);
$inter_img = imagecreatetruecolor($inter_w, $inter_h);
//将原图缩放比例后裁剪
imagecopyresampled($inter_img, $src_img, 0, 0, 0, 0, $inter_w, $inter_h, $w, $h);
// 定义一个新的图像
$new_img = imagecreatetruecolor($new_width, $new_height);
imagecopy($new_img, $inter_img, 0, 0, 0, 0, $new_width, $new_height);
switch ($type) {
case IMAGETYPE_JPEG:
// 存储图像
imagejpeg($new_img, $dst_file, 100);
break;
case IMAGETYPE_PNG:
imagepng($new_img, $dst_file, 100);
break;
case IMAGETYPE_GIF:
imagegif($new_img, $dst_file, 100);
break;
default:
break;
}
}
}
/*
下载保存指定地址的图片
*/
function downloadimg($url, $path, $savename, $cookie = '')
{
$path_info = str_ireplace('../', '', $path);
if (!file_exists($path . '/' . $savename)) {
checkDir($path . '/' . $savename);
@mkdir($path, 0777);
$get_file = get_curl($url, $cookie);
// dump( $get_file);
$fp = fopen($path . '/' . $savename, "w");
fwrite($fp, $get_file['info']);
fclose($fp);
}
return $path_info ? $path_info . '/' . $savename : $path . '/' . $savename;
}
/*
* 上传base64位图片
*/
function imgsave_auth($base64_image_content)
{
//保存base64字符串为图片
if ($base64_image_content) {
//base64_image 要截取base64,前的部分
preg_match('/(?<=base64,)[\S|\s]+/', $base64_image_content, $base64_image);
$list = explode(';', $base64_image_content);
// logs('base64_image',$base64_image);
if (stristr($list[0], 'png')) {
$img_str = '.png';
} elseif (stristr($list[0], 'jpg')) {
$img_str = '.jpg';
} elseif (stristr($list[0], 'jpeg')) {
$img_str = '.jpeg';
} elseif (stristr($list[0], 'gif')) {
$img_str = '.gif';
} elseif (stristr($list[0], 'mp4')) {
$img_str = '.mp4';
} else {
$img_str = '.png';
// $data['status']=0;
// $data['info']= '图片格式错误';
// return $data;
}
// 匹配出图片的格式
$date = date('Ymd', time());
$time = time();
$round = rand_string(4, 1);
$imgpath = 'photos/file/app/' . $date . '/' . $time . $round . $img_str;
$imgurl = 'photos/file/app/' . $date . '/' . $time . $round . $img_str;
checkDir($imgpath);
$res = file_put_contents($imgpath, base64_decode($base64_image[0]));
if ($res) {
$data['status'] = 1;
$data['imgurl'] = $imgurl;
return $data;
} else {
$data['status'] = 0;
$data['info'] = '保存失败，请刷新后重试';
return $data;
}
}
}
/*
* 时间格式
*/
function formatDate($sTime)
{
//sTime=源时间，cTime=当前时间，dTime=时间差
$cTime = time();
$dTime = $cTime - $sTime;
$dDay = intval(date("Ymd", $cTime)) - intval(date("Ymd", $sTime));
$dYear = intval(date("Y", $cTime)) - intval(date("Y", $sTime));
if ($dTime < 60) {
$dTime = $dTime . "秒前";
} elseif ($dTime < 3600) {
$dTime = intval($dTime / 60) . "分钟前";
} elseif ($dTime >= 3600 && $dDay == 0) {
$dTime = "今天" . date("H:i", $sTime);
} elseif ($dYear == 0) {
$dTime = date("m-d H:i", $sTime);
} else {
$dTime = date("Y-m-d H:i", $sTime);
}
return $dTime;
}
/**
* 友好时间显示
* @param $time
* @return bool|string
*/
function friend_date( $time )
{
if (! $time ){
return false;
}
$d = time() - intval ( $time );
$ld = $time - mktime (0, 0, 0, 0, 0, date ( 'Y' )); //得出年
$md = $time - mktime (0, 0, 0, date ( 'm' ), 0, date ( 'Y' )); //得出月
$byd = $time - mktime (0, 0, 0, date ( 'm' ), date ( 'd' ) - 2, date ( 'Y' )); //前天
$yd = $time - mktime (0, 0, 0, date ( 'm' ), date ( 'd' ) - 1, date ( 'Y' )); //昨天
$dd = $time - mktime (0, 0, 0, date ( 'm' ), date ( 'd' ), date ( 'Y' )); //今天
$td = $time - mktime (0, 0, 0, date ( 'm' ), date ( 'd' ) + 1, date ( 'Y' )); //明天
$atd = $time - mktime (0, 0, 0, date ( 'm' ), date ( 'd' ) + 2, date ( 'Y' )); //后天
if ( $d == 0) {
$fdate = '刚刚' ;
} else {
switch ( $d ) {
case $d < $td :
$fdate = '后天' . date ( 'H:i' , $time );
break ;
case $d < 0:
$fdate = '明天' . date ( 'H:i' , $time );
break ;
case $d < 60:
$fdate = $d . '秒前' ;
break ;
case $d < 3600:
$fdate = floor ( $d / 60) . '分钟前' ;
break ;
case $d < $dd :
$fdate = floor ( $d / 3600) . '小时前' ;
break ;
case $d < $yd :
$fdate = '昨天' . date ( 'H:i' , $time );
break ;
case $d < $byd :
$fdate = '前天' . date ( 'H:i' , $time );
break ;
case $d < $md :
$fdate = date ( 'm月d日 H:i' , $time );
break ;
case $d < $ld :
$fdate = date ( 'm月d日' , $time );
break ;
default :
$fdate = date ( 'Y年m月d日' , $time );
break ;
}
}
return $fdate ;
}
/**
* 作用：将xml转为array
*/
function xmlToArray($xml)
{
//将XML转为array
$array_data = json_decode(json_encode(simplexml_load_string($xml, 'SimpleXMLElement', LIBXML_NOCDATA)), true);
return $array_data;
}
/**
* 多维数组查询值是否存在
* @param string $value 需要查询的值
* @param array $array 需要查询的数组
* @return string|boolean 查询到返回包含值的数组,查询不到返回false
*/
function deep_in_array($value, $array)
{
foreach ($array as $v) {
if (!is_array($v)) {
if ($v == $value) {
return $v;
}
continue;
}
if (in_array($value, $v)) {
return $v;
} else {
deep_in_array($value, $v);
}
}
return false;
}
/**
* 简单可逆加密
* @param string $txtStream 需要加密的数据
* @param string $password 键值
* @return string 加密结果
*/
function simple_encrypt($txtStream, $password = '')
{
if ($password === '') {
$password = config('encrypt_salt'); //BUzheng_123
}
//密锁串，不能出现重复字符，内有A-Z,a-z,0-9,=,+,_,
$lockstream = '1234567890zxcvbnmZXCVBNM=asdfghjklASDFGHJKL+qwertyuiopQWERTYUIOP_';
//密锁串长度
$lockLen = strlen($lockstream);
//随机找一个数字，并从密锁串中找到一个密锁值
$lockCount = rand(0, $lockLen - 1);
//截取随机密锁值
$randomLock = $lockstream[$lockCount];
//结合随机密锁值生成MD5后的密码
$password = md5($password . $randomLock);
//开始对字符串加密
$txtStream = base64_encode($txtStream);
$tmpStream = '';
$i = 0;
$j = 0;
$k = 0;
for ($i = 0; $i < strlen($txtStream); $i++) {
$k = ($k == strlen($password)) ? 0 : $k;
$j = (strpos($lockstream, $txtStream[$i]) + $lockCount + ord($password[$k])) % ($lockLen);
$tmpStream .= $lockstream[$j];
$k++;
}
return $tmpStream . $randomLock;
}
/**
* 简单可逆解密
* @param string $txtStream 需要解密的数据
* @param string $password 键值
* @return string 解密结果
*/
function simple_decrypt($txtStream, $password = '')
{
if ($password === '') {
$password = config('encrypt_salt');
}
//密锁串，不能出现重复字符，内有A-Z,a-z,0-9,=,+,_,
$lockstream = '1234567890zxcvbnmZXCVBNM=asdfghjklASDFGHJKL+qwertyuiopQWERTYUIOP_';
//密锁串长度
$lockLen = strlen($lockstream);
//获得字符串长度
$txtLen = strlen($txtStream);
//截取随机密锁值
$randomLock = $txtStream[$txtLen - 1];
//获得随机密码值的位置
$lockCount = strpos($lockstream, $randomLock);
//结合随机密锁值生成MD5后的密码
$password = md5($password . $randomLock);
//开始对字符串解密
$txtStream = substr($txtStream, 0, $txtLen - 1);
$tmpStream = '';
$i = 0;
$j = 0;
$k = 0;
for ($i = 0; $i < strlen($txtStream); $i++) {
$k = ($k == strlen($password)) ? 0 : $k;
$j = strpos($lockstream, $txtStream[$i]) - $lockCount - ord($password[$k]);
while ($j < 0) {
$j = $j + ($lockLen);
}
$tmpStream .= $lockstream[$j];
$k++;
}
return base64_decode($tmpStream);
}