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In my custom component, I use a repeatable field.

Sometimes it is possible that a url_partenaire element is an empty string because it is not mandatory.

var_dump($this->item->logo_repeatable_list) gives this:

string(157) "{ "logo": ["images/website_logo_1.png","images/website_logo_2.png","images/website_logo_3.png"], "url_partenaire": ["","https://www.url_website_2.fr",""] }"

I need to create this:

<img src="images/website_logo_1.png"> <a href="https://www.url_website_2.fr"><img src="images/website_logo_2.png"></a> <img src="images/website_logo_3.png">

I begin with this, but it works only if there is one field in the repeatable field:

<?php $jsonPartenaires = json_decode($this->item->logo_repeatable_list, true); ?> <?php foreach ($jsonPartenaires as $key => $value) { foreach ($value as $content) echo '<img src="'. $content . '">'; } ?>

I don't really know what to do now.

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2 Answers 2

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Since your logos and urls exist in pairs, you can use a single loop over the logos and access the urls via the shared index.

Code: (Demo)

foreach ($jsonPartenaires['logo'] as $i => $logo) { $html = sprintf('<img src="%s">', $logo); if ($jsonPartenaires['url_partenaire'][$i]) { $html = sprintf( '<a href="%s">%s</a>', $jsonPartenaires['url_partenaire'][$i], $html ); } echo $html . "<br>"; }

Output: (tabbed and spaced for readability)

<img src="images/website_logo_1.png"> <br> <a href="https://www.url_website_2.fr"> <img src="images/website_logo_2.png"> </a> <br> <img src="images/website_logo_3.png"> <br>

Using printf() or sprintf() (the silent version), enables you to bind variables to a string without the noise of string concatenation or interpolation. If you ever want to call a string function on a variable (to prepare the strings, you can just wrap the parameters containing variables in the desired function(s).

I'll admit that in my own project, I'd probably use functional syntax. This allows you to cleanly join the html elements with <br> with no trailing <br>.

Code: (Demo)

echo implode( "<br>", array_map( function($logo, $url) { $html = sprintf('<img src="%s">', $logo); if ($url) { $html = sprintf('<a href="%s">%s</a>', $url, $html); } return $html; }, $jsonPartenaires['logo'], $jsonPartenaires['url_partenaire'] ) );
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  • @Laurent updated now Commented Apr 2, 2021 at 9:40
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If you have only 2 arrays (URLs and logos), you can use array_combine() to create an array with one as the key and the other as value:

$data = array_combine($jsonPartenaires['url_partenaire'], $jsonPartenaires['logo']); foreach ($data as $url => $logo) { echo '<a href="' . $url . '"><img src="'. $logo . '"></a>'; }
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