Insert selected value into get parameter array - php

Question

I do have a simple html form with select fields. the first field ask for the number of persons. The other fields ask for the age of each person:
<form action="#">
<select name="person">
<option value="0">0 person</option>
<option value="1">1 person</option>
<option value="2">2 persons</option>
<option value="3">3 persons</option>
<option value="4">4 persons</option>
<option value="5">5 persons</option>
</select>
<select name="age_p1">
<option value="0">0 year</option>
<option value="1">1 years</option>
<option value="2">2 years</option>
<option value="3">3 years</option>
<option value="4">4 years</option>
</select>
<select name="age_p2">
<option value="0">0 year</option>
<option value="1">1 years</option>
<option value="2">2 years</option>
<option value="3">3 years</option>
<option value="4">4 years</option>
</select>
<input type="hidden" name="personandage" value="[X,X,X]" >
<input type="submit">
</form>
So if I have e.g. 3 persons, 3 new select field appears to insert the age of each person.
An example:
person 1 = 1 years; person 2 = 4 years; person 3 = 5 years
After submitting the form GET value have to be in an array like this personandage=[1,4,5]
Does someone has an idea how to realize this with PHP? Thank you!

Answer 1

Try this on the html:
<form action="#">
<select name="person">
<option value="0">0 person</option>
<option value="1">1 person</option>
<option value="2">2 persons</option>
<option value="3">3 persons</option>
<option value="4">4 persons</option>
<option value="5">5 persons</option>
</select>
<select name="age[]">
<option value="0">0 year</option>
<option value="1">1 years</option>
<option value="2">2 years</option>
<option value="3">3 years</option>
<option value="4">4 years</option>
</select>
<select name="age[]">
<option value="0">0 year</option>
<option value="1">1 years</option>
<option value="2">2 years</option>
<option value="3">3 years</option>
<option value="4">4 years</option>
</select>
<input type="hidden" name="personandage" value="[X,X,X]" >
<input type="submit">
</form>
and then you can $_GET['age'] and should returns an array with the ages.

Answer 2

I would do it this way, by making the age_p1, age_p2 .... into an array called lets say ages[] This way it does not matter to the PHP how many are used in the HTML or whether you add them dynamically with javascript.
<?php
$pna = '[';
if ( isset($_GET['submit'] ) {
$pna = $_GET['person'];
foreach ( $_GET['ages'] as $age ) {
$pna .= ",$age";
}
}
$pna .= ']';
?>
<form action="#">
<select name="person">
<option value="0">0 person</option>
<option value="1">1 person</option>
<option value="2">2 persons</option>
<option value="3">3 persons</option>
<option value="4">4 persons</option>
<option value="5">5 persons</option>
</select>
<select name="ages[]">
<option value="0">0 year</option>
<option value="1">1 years</option>
<option value="2">2 years</option>
<option value="3">3 years</option>
<option value="4">4 years</option>
</select>
<select name="ages[]">
<option value="0">0 year</option>
<option value="1">1 years</option>
<option value="2">2 years</option>
<option value="3">3 years</option>
<option value="4">4 years</option>
</select>
<input type="hidden" name="personandage" value="<?php echo $pna;?>" >
<input type="submit" name="submit">
<!-- ^^^^^^^^^^^^^ -->
<!-- note I added an name attribute -->
</form>

Answer 3

Like the others said, put square brackets after the select. So
<select name="age[]">
...options...
</select>
<select name="age[]">
...options...
</select>
Would then be refered to as
_$GET["age"][0]
And
_$GET["age"][1]
Edit:
Sorry, noticed you wanted the array as personandage.
One option is to set the array on the page that your form redirects you to:
$array_index = $_GET["person"] - 1
for ($i = 0, $i <= $array_index, $i++) {
${"personandage" . $i = array("p1", _$GET["age"][$i]);
}
Now your arrays should look like this
$personandage1
$personandage2
Etc...
Hope I understood your question :)
//written from My cellphone, havent tested the code.