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三元表达式 ``` $totime = $todate ? strtotime($todate.' 23:59:59') : 0; ``` ### 去除html标签 php ``` function my_html($string,$sublen =80){ $string = strip_tags($string); $string = preg_replace ('/\n/is', '', $string); $string = preg_replace ('/ | /is', '', $string); $string = preg_replace ('/ /is', '', $string); preg_match_all("/[\x01-\x7f]|[\xc2-\xdf][\x80-\xbf]|\xe0[\xa0-\xbf][\x80-\xbf]|[\xe1-\xef][\x80-\xbf][\x80-\xbf]|\xf0[\x90-\xbf][\x80-\xbf][\x80-\xbf]|[\xf1-\xf7][\x80-\xbf][\x80-\xbf][\x80-\xbf]/", $string, $t_string); if(count($t_string[0]) - 0 > $sublen) $string = join('', array_slice($t_string[0], 0, $sublen))."…"; $string = join('', array_slice($t_string[0], 0, $sublen)); return $string; } ```