PHP在X个div之后结束div，并在X个div之后开始新的div

我正在尝试用php循环构建一个非对称网格

我已设法做到这一点：

<?php
$arr = array("blue", "yellow", "red", "pink", "green", "cyan", "gold", "orange", "magenta","blue", "yellow", "red", "pink", "green", "cyan", "gold", "orange", "magenta","blue", "yellow", "red", "pink", "green", "cyan", "gold", "orange", "magenta");

$i = 0;
foreach ($arr as $val) {

    if($i <= 4) {
        if($i%2 == 0) {
            if($i != 0) {
                echo "</div>";
            }
            echo '<div class="container" style="margin:20 10px;border:1px solid;">';
        }
    }
    if($i%7 == 0) {
        if($i != 0) {
            echo "</div>";
            echo '<div class="container" style="margin:20 10px;border:1px solid;">';
        }   
    }
    ?>
    <div class="holder" style="font-family:helvetica;font-weight:bold;padding:5px;background-color:<?php echo $val; ?>;">
        <?php echo $i." - ".$val;?>
    </div>
<?php
$i++;
}
?>
</div>

试试这个：

<?php // Fun testing array
$arr = array("blue", "yellow", "red", "pink", "green", "cyan", "gold", "orange", "magenta","blue", "yellow", "red", "pink", "green", "cyan", "gold", "orange", "magenta","blue", "yellow", "red", "pink", "green", "cyan", "gold", "orange", "magenta");

// Here's where we control the breaks
$breakpoints = array(0,2,4);
// Highest number of rows/items
$max_point = 7;

// Loop through all items
foreach ($arr as $i=>$val) {
    // Track breaks
    $calc = $i% $max_point;
    // Check for a breakpoint to make things happen
    if(in_array($calc,$breakpoints)) {
        // Is this a virgin?
        if ($i > 0) echo "</div>";
        // Output a new container
        echo '<div class="container" style="margin:20px 10px;border:1px solid;">'."\n\r";
    } ?>
    <div class="holder" style="font-family:helvetica;font-weight:bold;padding:5px;background-color:<?php echo $val; ?>;"><?php echo $i." - ".$val; $i++; ?></div>
<?php } ?>

您到底想做什么？您当前的代码在哪里失败？我建议您使用类和子选择器。看起来您正试图根据输出的div更改CSS。这将使您的代码更干净，更易于管理。我建议您停止使用style属性。这是一个示例。。。当然，我使用类
break
和
continue
可以让你控制foreach循环的流程。谢谢，我已经更新了帖子
<?php // Fun testing array
$arr = array("blue", "yellow", "red", "pink", "green", "cyan", "gold", "orange", "magenta","blue", "yellow", "red", "pink", "green", "cyan", "gold", "orange", "magenta","blue", "yellow", "red", "pink", "green", "cyan", "gold", "orange", "magenta");

// Here's where we control the breaks
$breakpoints = array(0,2,4);
// Highest number of rows/items
$max_point = 7;

// Loop through all items
foreach ($arr as $i=>$val) {
    // Track breaks
    $calc = $i% $max_point;
    // Check for a breakpoint to make things happen
    if(in_array($calc,$breakpoints)) {
        // Is this a virgin?
        if ($i > 0) echo "</div>";
        // Output a new container
        echo '<div class="container" style="margin:20px 10px;border:1px solid;">'."\n\r";
    } ?>
    <div class="holder" style="font-family:helvetica;font-weight:bold;padding:5px;background-color:<?php echo $val; ?>;"><?php echo $i." - ".$val; $i++; ?></div>
<?php } ?>