/**

* 从图片文件创建Image资源

* @param $file 图片文件，支持url

* @return bool|resource 成功返回图片image资源，失败返回false*/

function ImgInfo($img){if(preg_match(‘/http(s)?:\/\//‘,$img)){$fileSuffix = getNetworkImgType($img);

}else{$fileSuffix = pathinfo($img,PATHINFO_EXTENSION);

}if(!$fileSuffix) return false;switch ($fileSuffix){case ‘jpeg‘:

$theImage = @imagecreatefromjpeg($img);break;case ‘jpg‘:

$theImage = @imagecreatefromjpeg($img);break;case ‘png‘:

$theImage = @imagecreatefrompng($img);break;case ‘gif‘:

$theImage = @imagecreatefromgif($img);break;default:

$theImage = @imagecreatefromstring(file_get_contents($img));break;

}return $theImage;

}/**

* 获取网络图片类型

* @param $url 网络图片url,支持不带后缀名url

* @return bool*/

function getNetworkImgType($url){$ch = curl_init(); //初始化curl

curl_setopt($ch, CURLOPT_URL, $url); //设置需要获取的URL

curl_setopt($ch, CURLOPT_NOBODY, 1);

curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 3);//设置超时

curl_setopt($ch, CURLOPT_TIMEOUT, 3);

curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); //支持https

curl_exec($ch);//执行curl会话

$http_code = curl_getinfo($ch);//获取curl连接资源句柄信息

curl_close($ch);//关闭资源连接

if ($http_code[‘http_code‘] == 200) {$theImgType = explode(‘/‘,$http_code[‘content_type‘]);if($theImgType[0] == ‘image‘){return $theImgType[1];

}else{return false;

}

}else{return false;

}

}/**

* 分行连续截取字符串

* @param $str 需要截取的字符串,UTF-8

* @param int $row 截取的行数

* @param int $number 每行截取的字数，中文长度

* @param bool $suffix 最后行是否添加‘...’后缀

* @return array 返回数组共$row个元素，下标1到$row*/

function cn_row_substr($str,$row = 1,$number = 10,$suffix = true){$result = array();for ($r=1;$r<=$row;$r++){$result[$r] = ‘‘;

}$str = trim($str);if(!$str) return $result;$theStrlen = strlen($str);//每行实际字节长度

$oneRowNum = $number * 3;for($r=1;$r<=$row;$r++){if($r == $row and $theStrlen > $r * $oneRowNum and $suffix){$result[$r] = mg_cn_substr($str,$oneRowNum-6,($r-1)* $oneRowNum).‘...‘;

}else{$result[$r] = mg_cn_substr($str,$oneRowNum,($r-1)* $oneRowNum);

}if($theStrlen < $r * $oneRowNum) break;

}return $result;

}/**

* 按字节截取utf-8字符串

* 识别汉字全角符号，全角中文3个字节，半角英文1个字节

* @param $str 需要切取的字符串

* @param $len 截取长度[字节]

* @param int $start 截取开始位置，默认0

* @return string*/

function mg_cn_substr($str,$len,$start = 0){$q_str = ‘‘;$q_strlen = ($start + $len)>strlen($str) ? strlen($str) : ($start + $len);//如果start不为起始位置，若起始位置为乱码就按照UTF-8编码获取新start

if($start and json_encode(substr($str,$start,1)) === false){for($a=0;$a<3;$a++){$new_start = $start + $a;$m_str = substr($str,$new_start,3);if(json_encode($m_str) !== false) {$start = $new_start;break;

}

}

}//切取内容

for($i=$start;$i

if(ord(substr($str,$i,1))>0xa0){$q_str .= substr($str,$i,3);$i+=2;

}else{$q_str .= substr($str,$i,1);

}

}return $q_str;

}