php用laravel 5重复

你是 explode -使服务成为数组。

Foreach 正在遍历数组(在您的示例中它有两个元素),因此foreach主体中的代码将重复两次。如果你有三个元素,它将被重复三次。等等。

实现你所追求的目标的一种方法是 in_array 检查服务是否在您拥有的数组中。如果它在数组中,则将复选框标记为 checked .

<?php
$edit_data->service_day = "목,토";
$service_day = explode(',', $edit_data->service_day);
?>
<input type="checkbox" name="service_day[]" id="checkbox2_1" value="월" 
<?php   if(in_array("월", $service_day)){echo 'checked="checked"';}?>
>
<label for="checkbox2_1">월</label>
<input type="checkbox" name="service_day[]" id="checkbox2_2" value="화"
<?php if(in_array("화", $service_day)){echo 'checked="checked"';}?>
>
<label for="checkbox2_2">화</label>
<input type="checkbox" name="service_day[]" id="checkbox2_3" value="수"
<?php if(in_array("수", $service_day)){echo 'checked="checked"';}?>
>
<label for="checkbox2_3">수</label>
<input type="checkbox" name="service_day[]" id="checkbox2_4" value="목"
<?php if(in_array("목", $service_day)){echo 'checked="checked"';}?>
>
<label for="checkbox2_4">목</label>
<input type="checkbox" name="service_day[]" id="checkbox2_5" value="금"
<?php if(in_array("금", $service_day)){echo 'checked="checked"';}?>
>
<label for="checkbox2_5">금</label>
<input type="checkbox" name="service_day[]" id="checkbox2_6" value="토"
<?php if(in_array("토", $service_day)){echo 'checked="checked"';}?>
>
<label for="checkbox2_6">토</label>
<input type="checkbox" name="service_day[]" id="checkbox2_7" value="일"
<?php if(in_array("일", $service_day)){echo 'checked="checked"';}?>
>
<label for="checkbox2_7">일</label>
</td>

另一种方法是:

<?php 

//All of the available service days
$available_service_days = ['월', '화', '수', '목', '금', '토', '일'];

//Checked service days
$edit_data->service_day = "목,토";
$service_day = explode(',', $edit_data->service_day);


//Loop through the available service days to generate checkbox
foreach($available_service_days as $key => $available_service_day) {
//Print the checkbox and check it if necessary
?>

    <input type="checkbox" name="service_day[]" id="checkbox2_<?php echo $key; ?>" value="<?php echo $available_service_day; ?>" 
    <?php if(in_array($available_service_day, $service_day)){echo 'checked="checked"';}?>
    >
    <label for="checkbox2_7"><?php echo $available_service_day; ?></label>
<?php } ?>