<div class="ccinfo"><?php for ($j=0, $n2=sizeof($selection[$i]['fields']); $j<$n2; $j++) {?><label <?php echo (isset($selection[$i]['fields'][$j]['tag']) ? 'for="'.$selection[$i]['fields'][$j]['tag'] . '" ' : ''); ?>class="inputLabelPayment"><?php echo $selection[$i]['fields'][$j]['title']; ?></label><?php echo $selection[$i]['fields'][$j]['field']; ?><?php }?></div>
<?php for ($j=0, $n2=sizeof($selection[$i]['fields']); $j<$n2; $j++) {?>：循环开始，会循环$selection[$i]['fields']下的所有量
<?php echo (isset($selection[$i]['fields'][$j]['tag']) ? 'for="'.$selection[$i]['fields'][$j]['tag'] . '" ' : '');?>：如果$selection[$i]['fields'][$j]['tag']（$j为循环的数字）存在，就输出HTML代码：for="（$selection[$i]['fields'][$j]['tag']的值）"，否则输出空
<?php echo $selection[$i]['fields'][$j]['title']; ?>：输出$selection[$i]['fields'][$j]['title']
<?php echo$selection[$i]['fields'][$j]['field'];?>：输出$selection[$i]['fields'][$j]['field']
<?php }?>：本次循环结束，继续下次
<?php echo (isset($selection[$i]['fields'][$j]['tag']) ? 'for="'.$selection[$i]['fields'][$j]['tag'] . '" ' : '');?>：如果$selection[$i]['fields'][$j]['tag']（$j为循环的数字）存在，就输出HTML代码：for="（$selection[$i]['fields'][$j]['tag']的值）"，否则输出空
<?php echo $selection[$i]['fields'][$j]['title']; ?>：输出$selection[$i]['fields'][$j]['title']
<?php echo$selection[$i]['fields'][$j]['field'];?>：输出$selection[$i]['fields'][$j]['field']
<?php }?>：本次循环结束，继续下次
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