how to access php variable out side of a foreach loop

Question

i have a veriable named (num) which is used for increments changes names of ids by 1 num+1 but in my foreachloop i cant access it .

i tried declaring it before the loop still doesnot work

<?php $num = 0; ?>
<?php foreach($listings as $list):?>
    <li>
        <div class="checkbox">
            <input type="checkbox" class="css-checkbox" value="<?php echo $list['title'];?>" id="visit<?php echo $num+1;?>" name="treatment<?php echo $num+1;?>">
            <label for="visit<?php echo $num+1;?>" class="css-label"><?php echo $list['title']?> <strong><?php echo $list['price'];?><span>&#163;</span></strong></label>
        </div>
    </li>
<?php endforeach;   ?>
</ul>
<hr>
<input type="hidden" value="<?php echo $num;?>" name="total"/>

i want the input ids to be incremented by 1 like treatment1,treatment2

use ... as $num => $list and skip the outside declaration of $num — Mulan
– Mulan, Commented May 20, 2019 at 18:27

Qirel · Accepted Answer · 2019-05-20 18:28:20Z

You should increment the $num variable by doing $num++; once inside the loop, then print it where you need it with <?php echo $num; ?> without using <?php echo $num+1; ?> - as doing so will only increment it as you echo it - not add one to each iteration.

<?php 
$num = 0;
foreach($listings as $list):
    $num++; // Increment $num for each iteration
    ?>
    <li>
        <div class="checkbox">
            <input type="checkbox" class="css-checkbox" value="<?php echo $list['title'];?>" id="visit<?php echo $num;?>" name="treatment<?php echo $num;?>">
            <label for="visit<?php echo $num;?>" class="css-label"><?php echo $list['title']?> <strong><?php echo $list['price'];?><span>&#163;</span></strong></label>
        </div>
    </li>
<?php endforeach; ?>

If your $listings is numeric indexed, you can use the key of each element in the array instead by doing

foreach($listings as $num=>$list):
    ?>
    <li>
        <div class="checkbox">
            <input type="checkbox" class="css-checkbox" value="<?php echo $list['title'];?>" id="visit<?php echo $num;?>" name="treatment<?php echo $num;?>">
            <label for="visit<?php echo $num;?>" class="css-label"><?php echo $list['title']?> <strong><?php echo $list['price'];?><span>&#163;</span></strong></label>
        </div>
    </li>
<?php endforeach; ?>

rrsantos · Accepted Answer · 2019-12-06 06:04:22Z

1

The problem is you did not set the value of $num variable you just only print or echo it inside the html tags. You need to add or increment the $num variable inside the loop like this.

 <?php $num++; ?>

or

 <?php $num = $num+1; ?>

edited Dec 6, 2019 at 6:04

answered May 21, 2019 at 6:20

rrsantos

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