How to use shortcode by php to parse xml for getting element with same attribute in Wordpress?

Question

I want to parse xml for getting element with same attribute and display it into my wordpress post using shortcode by php.
I create a xml file called emp_test.xml

<?xml version="1.0" encoding="utf-8"?>
<all_emp>
<emp_detail>
    <emp emp_name="john"><img>john_1.jpg</img></emp>
    <emp emp_name="john"><img>john_2.jpg</img></emp>
    <emp emp_name="john"><img>john_3.jpg</img></emp>
    <emp emp_name="marry"><img>marry_1.jpg</img></emp>
    <emp emp_name="marry"><img>marry_2.jpg</img></emp>
    <emp emp_name="david"><img>david_1.jpg</img></emp>
</emp_detail>
</all_emp>

I create shortcode in functions.php to get all img has attribute is john:

function create_shortcode_empimg() {
$url = 'https://.../emp_test.xml';
$xml = simplexml_load_file("$url") or die("Error: Cannot create object");
foreach ($xml->xpath("//*[@emp_name='john']/img") as $node)
{
    $img = (string) $node;
    return $img;
}
}
add_shortcode( 'empimg_shortcode', 'create_shortcode_empimg' );

I use this shortcode into my wordpress post.

But, the reult is comming like this:

john_1.jpg

How to get all img has attribute is john like?

john_1.jpg
john_2.jpg
john_3.jpg

Anyone's help is appreciated.

Answer 1

You can use like this.

<?php
    $url = '<?xml version="1.0" encoding="utf-8"?>
    <all_emp>
    <emp_detail>
        <emp emp_name="john"><img>john_1.jpg</img></emp>
        <emp emp_name="john"><img>john_2.jpg</img></emp>
        <emp emp_name="john"><img>john_3.jpg</img></emp>
        <emp emp_name="marry"><img>marry_1.jpg</img></emp>
        <emp emp_name="marry"><img>marry_2.jpg</img></emp>
        <emp emp_name="david"><img>david_1.jpg</img></emp>
    </emp_detail>
    </all_emp>';

    $xml = simplexml_load_string($url) or die("Error: Cannot create object");
    $imgstring ='';
    foreach ($xml->emp_detail->emp as $node)
    {     
        if (strpos((string) $node->img, 'john') !== false) {
          $imgstring .= (string) $node->img.",";
        }
    }
    print_r($imgstring);
?>