Fill input with array - php

Question

In my jquery code I have:
$("#show").append("<img src=" +attachment.url+" alt="+attachment.alt+" title="+attachment.title+" description="+attachment.caption+" class='img-responsive img-thumbnail'/><input type='hidden' name='my_image_URL[]' value="+attachment.url+"></span>");
My jquery code adds fields for news selected images and fills inputs names my_image_URL[].
In PHP:
if ( isset( $_POST['my_image_URL'] ) ) {
$urls = $_POST['my_image_URL'];
echo '<input type="hidden" name="imagens_home" value="'.$urls.'"/>';
}
I trying to add $urls array in the hidden input.
And after, if its works ok:
<?php
if ($urls != '' ) {
foreach ($urls as $url) {
?>
<img src="<?php echo $url;?>" class="img-responsive img-thumbnail " />
<input name="my_image_URL[]" value="<?php echo $url;?>"/>
</div>
<?php
};
}
?>
But this part of code not fill the input:
if ( isset( $_POST['my_image_URL'] ) ) {
$urls = $_POST['my_image_URL'];
echo '<input type="hidden" name="imagens_home" value="'.$urls.'"/>';
}
---------- UPDATE --------
options.php
register_setting(
'tema-setting-group',//string $option_group
'imagens_home' //string $option_name
//calback $sanitize_calback
);
---
add_settings_field(
'home-imagens-top',//string $id
'Imagens',//String $title
'tema_home_imgs',//string $calback
'opcoes_do_tema',//string $page
'tema-home-options'//string $section
//string $args
);
//calback
function tema_home_imgs(){
$urlsImagens = esc_attr( get_option( 'imagens_home' ) ); // RETURN DB DATA
include( get_template_directory() . '/inc/templates/selecao_imagens.php');
if ( isset( $_POST['my_image_URL'] ) ) {
$urls = $_POST['my_image_URL'];
echo '<input name="imagens_home" value="'.$json_encode($urls).'" style="width:300px"/>';
}
}
selecao_imagens.php
<input id="my_upl_button" type="button" value="Escolher Imagens" /><br/>
<div class="row">
<div id="exibe" class="sortable">
<?php
$urls = json_decode($urlsImagens, true);
if ($urls != '' ) {
foreach ($urls as $url) {
?>
<img src="<?php echo $url;?>" class="img-responsive img-thumbnail " />
<input name="my_image_URL[]" value="<?php echo $url;?>"/>
<?php
};
}
?>
</div>
</div>
theme_options.php
<?php settings_errors();?>
<form method="post" action="options.php">
<?php settings_fields ('tema-setting-group'); ?>
<?php do_settings_sections (
'opcoes_do_tema'//string $page
); ?>
<?php submit_button ();
?>
</form>
-------- UPDATE 2 -------
I tried:
echo '<input name="imagens_home" value="' . htmlspecialchars(json_encode($urls)) . '" />';
but it is not yet filling in the input.
I also tried only:
If (isset ($ _POST ['my_image_URL'])) {
Print_r ($ _ POST ['my_image_URL']);
}
But after the submit does not appear anything on the screen, in the form correctly saves all other inputs except what I am trying to save the array, if I put some manual information goes ok. But I do not understand why it is not capturing the my_image_URL [] names of each image input. The action in form is like this:
<Form method = “post” action = “options.php”>
I’m using the Settings API
Thanks

Answer 1

I trying to add $urls array in the hidden input.
If I understand, you're trying to store an array value in a hidden input, so you can retrieve it later. Problem is, this doesn't work...
echo '<input type="hidden" name="imagens_home" value="'.$urls.'"/>';
...because when you echo a PHP array all you get is the string Array, not the actual array contents.
You could turn the array into a json string though:
echo '<input type="hidden" name="imagens_home" value="'.$json_encode($urls).'"/>';
Now your hidden input has a regular string. Later, when the form is POSTed, you could retrieve it:
$urls = json_decode($_POST['imagens_home'], true)