时间:2020-3-23 编辑:37°5 点个赞呗
/** * 字符串截取,支持中文和其他编码 * static * access public * @param string $str 需要转换的字符串 * @param string $start 开始位置 * @param string $length 截取长度 * @param string $charset 编码格式 * @param string $suffix 截断显示字符 * return string */ function msubstr($str, $startto, $leng, $charset = "utf-8", $suffix = true) { if ($startto) { $start = $startto; } else { $start = 0; } $length=$leng?:5; if (mb_strlen($str, $charset) > $length) { if (function_exists("mb_substr")) { if ($suffix) return mb_substr($str, $start, $length, $charset) . "..."; else return mb_substr($str, $start, $length, $charset); } elseif (function_exists('iconv_substr')) { if ($suffix) return iconv_substr($str, $start, $length, $charset) . "..."; else return iconv_substr($str, $start, $length, $charset); } else { $re['utf-8'] = "/[\x01-\x7f]|[\xc2-\xdf][\x80-\xbf]|[\xe0-\xef][\x80-\xbf]{2}|[\xf0-\xff][\x80-\xbf]{3}/"; $re['gb2312'] = "/[\x01-\x7f]|[\xb0-\xf7][\xa0-\xfe]/"; $re['gbk'] = "/[\x01-\x7f]|[\x81-\xfe][\x40-\xfe]/"; $re['big5'] = "/[\x01-\x7f]|[\x81-\xfe]([\x40-\x7e]|\xa1-\xfe])/"; preg_match_all($re[$charset], $str, $match); $slice = join("", array_slice($match[0], $start, $length)); } return $suffix ? $slice . '...' : $slice; } else { return $str; } }
php字符串截取,支持中文和其他编码
时间:2020-3-23 编辑:37°5 点个赞呗
php字符串截取,支持中文和其他编码
/** * 字符串截取,支持中文和其他编码 * static * access public * @param string $str 需要转换的字符串 * @param string $start 开始位置 * @param string $length 截取长度 * @param string $charset 编码格式 * @param string $suffix 截断显示字符 * return string */ function msubstr($str, $startto, $leng, $charset = "utf-8", $suffix = true) { if ($startto) { $start = $startto; } else { $start = 0; } $length=$leng?:5; if (mb_strlen($str, $charset) > $length) { if (function_exists("mb_substr")) { if ($suffix) return mb_substr($str, $start, $length, $charset) . "..."; else return mb_substr($str, $start, $length, $charset); } elseif (function_exists('iconv_substr')) { if ($suffix) return iconv_substr($str, $start, $length, $charset) . "..."; else return iconv_substr($str, $start, $length, $charset); } else { $re['utf-8'] = "/[\x01-\x7f]|[\xc2-\xdf][\x80-\xbf]|[\xe0-\xef][\x80-\xbf]{2}|[\xf0-\xff][\x80-\xbf]{3}/"; $re['gb2312'] = "/[\x01-\x7f]|[\xb0-\xf7][\xa0-\xfe]/"; $re['gbk'] = "/[\x01-\x7f]|[\x81-\xfe][\x40-\xfe]/"; $re['big5'] = "/[\x01-\x7f]|[\x81-\xfe]([\x40-\x7e]|\xa1-\xfe])/"; preg_match_all($re[$charset], $str, $match); $slice = join("", array_slice($match[0], $start, $length)); } return $suffix ? $slice . '...' : $slice; } else { return $str; } }