It seems very simple. but very strong to use.
Actually, I used to use it onto my project frequently.
Thanks to_ https://github.com/paulgb/simplediff
01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 | function diff($old, $new){ $matrix = array(); $maxlen = 0; foreach($old as $oindex => $ovalue){ $nkeys = array_keys($new, $ovalue); foreach($nkeys as $nindex){ $matrix[$oindex][$nindex] = isset($matrix[$oindex – 1][$nindex – 1]) ? $matrix[$oindex – 1][$nindex – 1] + 1 : 1; if($matrix[$oindex][$nindex] > $maxlen){ $maxlen = $matrix[$oindex][$nindex]; $omax = $oindex + 1 – $maxlen; $nmax = $nindex + 1 – $maxlen; } } } if($maxlen == 0) return array(array(‘d’=>$old, ‘i’=>$new)); return array_merge( diff(array_slice($old, 0, $omax), array_slice($new, 0, $nmax)), array_slice($new, $nmax, $maxlen), diff(array_slice($old, $omax + $maxlen), array_slice($new, $nmax + $maxlen)));}function htmlDiff($old, $new, $mode=0){ $ret = ”; $diff = diff(preg_split(“/[s]+/”, $old), preg_split(“/[s]+/”, $new)); foreach($diff as $k){ if(is_array($k)) if($mode == 0){ //추가/삭제 모두 표시 $ret .= (!empty($k[‘d’])?”<span class=’deleted’>”.implode(‘ ‘,$k[‘d’]).”</span> “:”). (!empty($k[‘i’])?”<span class=’inserted’>”.implode(‘ ‘,$k[‘i’]).”</span> “:”); }else if($mode == 1){ //삭제 내용만 표시 $ret .= (!empty($k[‘d’])?”<span class=’deleted’>”.implode(‘ ‘,$k[‘d’]).”</span> “:”); }else if($mode == 2){ //추가 내용만 표시 $ret .= (!empty($k[‘i’])?”<span class=’inserted’>”.implode(‘ ‘,$k[‘i’]).”</span> “:”); }else $ret .= $k . ‘ ‘; else $ret .= $k . ‘ ‘; } return $ret;} |