html tag inside php variable

Question

It is possible to use html tags within php variable. For example I am making a loop where I have a parent item that I want to take <strong> and the children items I just add a -, only if I do it at the time of setting the variable of the parent item $varPai = "<strong>{$varValue}"</strong>, it does not render me the item with Strong, it is possible to do this within php?

this is my foreach that’s riding, father > sons

foreach($listaLocalidade as $p_id => $p_nome){
$cidades = $this->Localidade->find('list',array('conditions'=>"Localidade.Localidade_id ={$p_id}", 'Localidade.programas is not null'));    
$opcoesPaisCidade[$p_id] = "<strong>{$p_nome}</strong>"; // aqui é o pai, onde eu teria que deixar strong

foreach($cidades as $c_id => $c_nome){
    $opcoesPaisCidade[$c_id] = ' - '.$c_nome;
    //die(print_r($opcoesPaisCidade));
}

}

And I’m riding like this:

<select id="combobox" name="data[orcamento][localidade_id]">
  <option value="">Select one...</option>
   <?php
   foreach($opcoesPaisCidade as $p_id => $p_nome){
   ?>
   <option value="<?=$p_id?>"><?=$p_nome?></option>
   <?}?>
</select>

Answer 1

Yes, it is possible to use any html tag in a php variable, since these tags, it is enough that these values are printed for the browser, so that they are rendered.

$num = array(1,2,3,4,5);
$retorno = '';

foreach($num as $numero){
    if($numero % 2 == 1){
        $retorno .= "<strong>{$numero}</strong><br/>";
    } else {
        $retorno .= "{$numero}<br/>";
    }
}

print $retorno;

In this case, the html tag must be within the quotes, both the opening and closing tag.

$var = "<tag>{$var_a}</tag>";

If it is a list (select), you can concatenate a tag, based on a condition.

$num = array(1,2,3);
$retorno = '';
foreach($num as $numero){
    $retorno .= "<option";
    if($numero == 3){
        $retorno .= " selected>";
    } else {
        $retorno .= ">";
    }
    $retorno .= "{$numero}</option>";
}

print "<select>";
print $retorno;
print "</select>";

This one, for example, will select the number 3 by default to bold that value, you can use a class and some css, or you can apply an inline css property.

$num = array(1,2,3);
$retorno = '';
foreach($num as $numero){
    $retorno .= "<option";
    if($numero == 3){
        $retorno .= " class=\"bold\">";
    } else {
        $retorno .= ">";
    }
    $retorno .= "{$numero}</option>";
}

print "<select>";
print $retorno;
print "</select>";

This would be the css property:

<style type="text/css">
.bold { font-weight:bold; }
</style>

Or with the online css property:

...
if($numero == 3){
        $retorno .= " style=\"font-weight:bold;\">";
    } else {
        $retorno .= ">";
    }
...

NOTE: It is not possible to style part of a option, or even create new tags within one, because they are usually stylized according to the platform in use.

In recommendation, there are own Apis to style forms, if you think that what you are currently doing is not enough, use some API.