Displaying specific XML nodes in PHP

Question

I'm trying to display specific nodes from a .xml file with PHP depending on the variable

I would like to know if there is another way to make it work or to know what's wrong with my code.

I'm trying to only display <name> from the .xml file.

Here is my code that doesn't work:

function display_xml_nodes($xmlstr, $node) {
    $xmlstr = simplexml_load_file("$xmlstr") or die("Error: name not found");
    echo $xmlstr->foods->products->product->name . "\n";
}

display_xml_nodes("ex_04.xml", "name");

Here is the .xml

<food>
    <foods>
        <title>Products</title>
        <products>
            <product>
                <name>Chcolate Bar</name>
                <price>1</price>
            </product>
            <product>
                <name>Milk</name>
                <price>0.50</price>
            </product>
            <product>
                <name>Water</name>
                <price>0.50</price>
            </product>
            <product>
                <name>Donut</name>
                <price>1.50</price>
            </product>
        </products>
    </foods>
</food>

Answer 1

I think the problem is with this line.

$xmlstr = simplexml_load_file("$xmlstr") or die("Error: name not found");

You have given the variable name $xmlstr as the string to the function simplexml_load_file () not what's within that variable (the actual file name).

So change that line as follows,

$xmlstr = simplexml_load_file($xmlstr) or die("Error: name not found");