apply 'checked' to checkbox if $var = checkbox value

[sophielois]

Hi, ill try and explain the best i can.

i have 2 variables that are passed to a page which holds a form.

These are the two variables

$unit1 = H21
$unit2 = H22

and this is the form

<form action="add.php" method="post" onsubmit="return doSubmit();">
<input type="checkbox" name="cb[]" value="H21" onclick="keepTrack(this);" /> H21<br />
<input type="checkbox" name="cb[]" value="H22" onclick="keepTrack(this);" /> H22<br />
<input type="checkbox" name="cb[]" value="H23" onclick="keepTrack(this);" /> H23<br />
<input type="checkbox" name="cb[]" value="H24" onclick="keepTrack(this);" /> H24<br />
<input type="checkbox" name="cb[]" value="H25" onclick="keepTrack(this);" /> H25<br />
<input type="checkbox" name="cb[]" value="H26" onclick="keepTrack(this);" /> H26<br />
<input type="checkbox" name="cb[]" value="H27" onclick="keepTrack(this);" /> H27<br />
<input type="checkbox" name="cb[]" value="H28" onclick="keepTrack(this);" /> H28<br />
<input type="submit" name="add" value="Proceed">
</form>

I need to apply "checked" to the checkboxes that have the same value as $unit1 and $unit2

but I really dont know how i would do this
Sophx

 

[sophielois]

ok got this figured now

<?php
$unit1 = 'H21';
$unit2 = 'H22';
?>
<form action="add.php" method="post" onsubmit="return doSubmit();">
<input type="checkbox" name="cb[]" value="H21" <?php if ($unit1 == 'H21' or $unit2 == 'H21') echo 'checked="checked"' ?>onclick="keepTrack(this);" /> H21<br />
<input type="checkbox" name="cb[]" value="H22" <?php if ($unit1 == 'H22' or $unit2 == 'H22') echo 'checked="checked"' ?>onclick="keepTrack(this);" /> H22<br />
<input type="checkbox" name="cb[]" value="H23" <?php if ($unit1 == 'H23' or $unit2 == 'H23') echo 'checked="checked"' ?>onclick="keepTrack(this);" /> H23<br />
<input type="checkbox" name="cb[]" value="H24" <?php if ($unit1 == 'H24' or $unit2 == 'H24') echo 'checked="checked"' ?>onclick="keepTrack(this);" /> H24<br />
<input type="checkbox" name="cb[]" value="H25" <?php if ($unit1 == 'H25' or $unit2 == 'H25') echo 'checked="checked"' ?>onclick="keepTrack(this);" /> H25<br />
<input type="checkbox" name="cb[]" value="H26" <?php if ($unit1 == 'H26' or $unit2 == 'H26') echo 'checked="checked"' ?>onclick="keepTrack(this);" /> H26<br />
<input type="checkbox" name="cb[]" value="H27" <?php if ($unit1 == 'H27' or $unit2 == 'H27') echo 'checked="checked"' ?>onclick="keepTrack(this);" /> H27<br />
<input type="checkbox" name="cb[]" value="H28" <?php if ($unit1 == 'H28' or $unit2 == 'H28') echo 'checked="checked"' ?>onclick="keepTrack(this);" /> H28<br />
<input type="submit" name="add" value="Proceed">
</form>

 

[DRJ478]

Sophie:

I'd recommend that you start looking at generating the HTML by string manipulation rather than using context switching mode where HTML is interspersed with PHP code.
Also, the above problem can easily be solved and put into a loop structure which would save you a lot of typing. The same logic can be applied to each line.