如何根据值[重复]选择一个选项

This question already has an answer here:

How to set an option from multiple options or array with different values to views as selected in select box using PHP 2 answers

This is my php code.

 $list .="<option value='$A $B'> $A,$B </option>";

I want to put a select option based on data. for example if $A = 1 and $B =2 then the option value get selected.

Normaly I would do it through this code

<?php echo $A == '1' ? 'selected' : ''; ?>

but since the $list is already in php quotes I cant.

</div>

Option 1:

$list .="<option value='$A $B' ". ($A == '1' ? 'selected : '') ."> $A,$B </option>";

Option 2:

$selected = $A == '1' ? 'selected : '';
$list .="<option value='$A $B' $selected> $A,$B </option>";

Since the accepted answer doesn't actually provide the desired effect, I'll post a correct method.

$list.="<option value='$A $B'".($A==1 && $B==2?' selected':'')."> $A,$B </option>";

This is an inline conditional that checks if both $A equals 1 and $B equals 2. When both are true, the attribute is added to the option, otherwise an empty string is added to the option.