Invalid argument supplied for foreach() loop - php

Question

Hi Stackoverflow i hope you are all well today,
i seem to have run into an issue and am kindly requesting your assistance;
Basically i am using jQuery to manipulate a form, the form then stores in the session and upon returning to the page a foreach loop is used to return the values from the session into the page.
The issue is if I create more than one instance of this foreach loop it gives me an invalid argument (if i add the same code over and over again it works fine)
So firstly here is the code;
jQuery
$(function(){
$('.add_child').click(function(){
var attrName = $(this).attr('name');
var count = $(this).attr('count');
$(this).attr('count', (parseInt(count)+1))
var input = $('<input />');
var lineBreak = $('<br/>');
input.attr('type','text')
input.attr('name',attrName+"["+count+"]" )
$('.children_form').append(input);
$('.children_form').append(lineBreak);
})
$('.add_s_child').click(function(){
var attrName = $(this).attr('name');
var count = $(this).attr('count');
$(this).attr('count', (parseInt(count)+1))
var input = $('<input />');
var lineBreak = $('<br/>');
input.attr('type','text')
input.attr('name',attrName+"["+count+"]" )
$('.spouce_children').append(input);
$('.spouce_children').append(lineBreak);
})
});
and the PHP / HTML CODE -> Button One (add_child)
Children, please name your natural and / or addopted children
<?php foreach($_SESSION['children'] as $index=>$child){ ?>
<?php echo "<input type='text' name='children[{$index}]' value='{$child}'/>";?>
<?php } ?>
<input type="button" count='<?php echo count($_SESSION['children']);?>' name="children" class="add_child" value="Add Another Child"/>
<div class="children_form">
<?php //add the inputs here?>
</div>
and the PHP / HTML CODE -> Button Two (spouce_children)
<label>Spouces Children, please name all natural and addopted children</label>
<input type="text" name="spoucechild" id="spoucechild" />
<?php foreach($_SESSION['spoucechild'] as $index=>$child){ ?>
<?php echo "<input type='text' name='spoucechild[{$index}]' value='{$child}'/>";?>
<?php } ?>
<input type="button" count='<?php echo count($_SESSION['spoucechild']);?>' name="spoucechild" class="add_s_child" value="Add Another Child"/>
<div class="spouce_children">
<?php //add the inputs here?>
</div>
I would like to thank you for any help you can / will provide <3
Error Occurs here:
<?php foreach($_SESSION['spoucechild'] as $index=>$child){ ?>

Answer 1

#Xavier: You could try --
<?php
if (isset($_SESSION['spoucechild'])) {
foreach($_SESSION['spoucechild'] as $index=>$child){
echo '<input type="text" name="spoucechild[' . $index . ']" value="' . $child . '" />' . "\n";
}
}
?>