我正在使用foreach在数据库中保存表单数据。
并且，有时某些值为空，因为它与输入的最后一个值相同。我想（如果当前迭代值为空）获取最后一个迭代值并打印它。
你有解决方案吗？
谢谢！
<?php
$html = file_get_contents("Intranet link");
function parseTable($html){
$dom = new domDocument;
$dom->loadHTML($html);
$dom->preserveWhiteSpace = true;
$tables = $dom->getElementById('tblResultats');
$rows = $tables->getElementsByTagName('tr');
return $rows;
}
$rows = parseTable($html);
$i = 1;
$count = 0;
foreach ($rows as $row){
if($i <> 1 ){
$cols = $row->getElementsByTagName('td');
if (preg_match('/visite/i',$cols->item(0)->nodeValue)) {
$count = $count-1;
}else{
$cols->item(6)->nodeValue = str_replace(' ', '', $cols->item(6)->nodeValue);
$train_nbr = preg_replace("/[^0-9,.]/", "", $cols->item(6)->nodeValue);
if($train_nbr == ""){
$train_nbr = "00000";
}
?>
<div id="criter_<?php echo $count; ?>" class="panel <?php if($cols->item(4)->nodeValue == " -Z"){ echo "panel-z-series"; }elseif($cols->item(4)->nodeValue == " -X"){ echo "panel-x-series"; }elseif($cols->item(4)->nodeValue == " BB"){ echo "panel-bb-series"; }elseif($cols->item(4)->nodeValue == " -B"){ echo "panel-b-series"; } ?>">
<input type="hidden" name="trainid_<?php echo $count; ?>" value="<?php echo $train_nbr; ?>">
<input type="hidden" name="traintype_<?php echo $count; ?>" value="<?php echo $cols->item(4)->nodeValue; ?>">
<input type="hidden" name="userid_<?php echo $count; ?>" value="<?php echo $_SESSION["Auth"]["username"]; ?>">
<input type="hidden" name="entrydate_<?php echo $count; ?>" value="<?php echo date("d/m/Y"); ?> <?php echo $cols->item(2)->nodeValue; ?>">
<input type="hidden" name="leftdate_<?php echo $count; ?>" value="<?php echo $cols->item(8)->nodeValue; ?>">
<input type="hidden" name="openeddate_<?php echo $count; ?>" value="<?php echo date("d/m/Y H:i:s"); ?>">
<input type="hidden" name="entrynumber_<?php echo $count; ?>" value="<?php echo $cols->item(0)->nodeValue; ?>|<?php echo $cols->item(1)->nodeValue; ?>">
<input type="hidden" name="leftnumber_<?php echo $count; ?>" value="<?php echo $cols->item(7)->nodeValue; ?>|<?php echo $cols->item(9)->nodeValue; ?>">
<div class="panel-heading">
<button onclick='addValue();$("#criter_<?php echo $count; ?>").remove();' class="btn btn-default"><i class="fa fa-trash"></i></button>
<strong><?php echo $cols->item(2)->nodeValue; ?> </strong>
<div style="font-size:18px;margin-top:-30px"><?php if($cols->item(4)->nodeValue == " -Z"){ echo "<strong>Z</strong>"; }elseif($cols->item(4)->nodeValue == " -X"){ echo "<strong>X</strong>"; }elseif($cols->item(4)->nodeValue == " BB"){ echo "<strong>BB</strong>"; }elseif($cols->item(4)->nodeValue == " -B"){ echo "<strong>B</strong>"; } echo $train_nbr; ?></div>
<span class="pull-right">
<div class="input-group date picker" >
<input type="text" class="form-control" value="<?php echo $cols->item(8)->nodeValue; ?>"/>
<span class="input-group-addon">
<span class="glyphicon glyphicon-calendar"></span>
</span>
</div>
</span>
<br>
<!-- If values from current iteration are empty, get the values from the -1 iteration -->
Train numéro <strong><?php echo $cols->item(0)->nodeValue; ?></strong> en provenance de <strong><?php echo $cols->item(1)->nodeValue; ?></strong> et à destination de <strong><?php echo $cols->item(9)->nodeValue; ?></strong> (<strong><?php echo $cols->item(7)->nodeValue; ?></strong>)
</div>
<div class="panel-body">
<div id="room_criter_<?php echo $count; ?>">
<p>
Commentaire sur l'engin :<br>
<input type="text" style="width:100%;display: inline-block;margin-bottom:8px;" name="comments_<?php echo $count; ?>" placeholder="Commentaire éventuel sur cet engin (imprévu par exemple)" class="form-control">
Planification des événements :<br>
<input type="text" style="width:70%;display: inline-block;margin-bottom:8px;" name="eventcriter_<?php echo $count; ?>[]" placeholder="Evènement ou intervention planifiée sur cet engin" class="form-control">
<input type="hidden" name="lastmodified_<?php echo $count; ?>[]" value="<?php echo $_SESSION['Auth']['username']; ?>" class="form-control">
<select style="width:19%;display: inline-block;" class="form-control" name="eventcriterstatus_<?php echo $count; ?>[]">
<option value="0" selected>Non effectuée</option>
<option value="1">En cours</option>
<option value="2">Terminée</option>
</select>
<a style="display: inline-block;border-radius: 4px;" class="btn btn-success" onclick="add_fields(<?php echo $count; ?>);"><span class="fa fa-plus"></span> Ajouter</a>
</p>
</div>
</div>
</div>
<?php
}
}
$i++;
$count++;
}
?>
答案 0 :(得分：0)
我不确定我是否理解正确的任务，但这是我的尝试。
for ($i = 2, $n = count($rows); $i < $n; ++$i) {
$row = $rows[$i - 1];
$prevRow = $rows[$i - 2];
$cols = $row->getElementsByTagName('td');
$prevCols = $prevRow->getElementsByTagName('td');
$values = [];
for ($j = 0; $j < ITEMS_COUNT; ++$j) {
$value = $cols->item($j)->nodeValue;
if (empty($value)) {
$value = $prevCols->item($j)->nodeValue;
}
$values[$j] = $value;
}
//And then you can use $values[$j] instead of $cols->item($j)->nodeValue.
}