tp5common.php

 ]+>/iU', '', $str);
}

/**
 * 截取字符串
 *
 * @name cutStr
 * @param $length 截取的个数
 * @return string
 */
function cutStr($strings, $length, $attrstr = '...') {
    if (strlen($strings) <= $length) {
        return $strings;
    }
    $start = 0;
    $str = substr($strings, $start, $length);
    $char = 0;
    for ($i = 0; $i < strlen($str); $i++) {
        if (ord($str[$i]) >= 128)
            $char++;
    }
    $str2 = substr($strings, $start, $length + 1);
    $str3 = substr($strings, $start, $length + 2);
    if ($char % 3 == 1) {
        return $str3 . $attrstr;
    }
    if ($char % 3 == 2) {
        return $str2 . $attrstr;
    }
    if ($char % 3 == 0) {
        return $str . $attrstr;
    }
}

/**
 * 跳转
 *
 * @name goUrl
 * @param string $msg 提示信息，可为空
 * @param string $toUrl 要跳转的页面，为空为当前页面
 */
function goUrl($msg = "", $toUrl = "") {
    $str = '';
    echo $str;
    exit;
}
//取得文章里面的图片
function GetImageSrc($body) {
   if( !isset($body) ) {
   		return '';
   }
   else {
    	preg_match_all ("/<(img|IMG)(.*)(src|SRC)=[\"|'|]{0,}([h|\/].*(jpg|JPG|gif|GIF|png|PNG))[\"|'|\s]{0,}/isU",$body,$out);
		return $out[4];
   }
}

//提取文里面的URL
function GetArticleUrl($body) {
	if( !isset($body) ) {
		return '';
	}
	else {
		preg_match_all("/<(a|A)(.*)(href|HREF)=[\"|'|](.*)[\"|'|\s]{0,}>(.*)<\/(a|A)>/isU",$body,$out);
		return $out;
	}
}