PHP中余数和取余的用法

<?php
 
$ary=array("name","egineer","sonny","tonny","pingk","apple","phone","clone","pink","colle");
foreach($ary as $key=>$value){
$key=$key+1;
if($key%2==1){echo '<li>';}
  ?>
 <span><?php echo $key.":". $value;?></span>
 
<?php
 if($key%2==0){echo '</li>';}
};
 ?>

second_one

 <?php
 
$ary=array("name","egineer","sonny","tonny","pingk","apple","phone","clone","pink","colle");
foreach($ary as $key=>$value){
$key=$key;
if($key%3==0){echo '<li>';}
  ?>
 <span class="<?php echo($key%3); ?>span"><?php echo $key.":". $value;?></span>
 
<?php
 if($key%3==2){echo '</li>';}
};
 ?>

大家可以运行以后查看结果并分析其巧妙之处~

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