PHP if statement building URLs

Question

I have written the following IF statement

if ($mainCat && $subCat) {
    $url = "/subjects/".$mainCat->alias."/".$r->alias;
}

Which is working great. You can see a demo here: http://217.199.187.199/equityschooltravel.co.uk/

However I have expanded on it and want to include an elseif, if a variable is present but it's not working:

if ($subCat == 78) {
    $url = "/subjects/".$mainCat->alias."/".$subCat->alias."/".$r->alias;
}
elseif ($mainCat && $subCat) {
    $url = "/subjects/".$mainCat->alias."/".$r->alias;
}

The idea is, if a country ($subcat) is selected with an ID of '78' the URL will be rendered differently.

Can you please explain what does 'not working' mean? Do you get any errors? Is the result not expected? — Andrei
– Andrei, Commented Sep 9, 2015 at 11:46
Considered isset(); or empty(); although I might have misunderstood your question — Epodax
– Epodax, Commented Sep 9, 2015 at 11:47
this is obviously failing you if ($subCat == 78) since the first piece of code contains the same but set in your elseif — Funk Forty Niner
– Funk Forty Niner, Commented Sep 9, 2015 at 11:49
Add error reporting to the top of your file(s) right after your opening PHP tag for example <?php error_reporting(E_ALL); ini_set('display_errors', 1); then the rest of your code, to see if it yields anything. — Funk Forty Niner
– Funk Forty Niner, Commented Sep 9, 2015 at 11:49

Yuri Blanc · Accepted Answer · 2015-09-09 12:04:46Z

1

if $maincat == 78, you'll never enter in else if. check for not existing subcat in if and then if the subcat is set you'll go for the else if.

if ($main && !isset($subcat)) {
    $url = "/subjects/".$mainCat->alias."/".$r->alias;
}
elseif ($mainCat && $subCat) {
    $url = "/subjects/".$mainCat->alias"/".$subCat->alias."/".$r->alias;
}
else ....

answered Sep 9, 2015 at 12:04

Yuri Blanc

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Comments

Deepak · Accepted Answer · 2015-09-09 12:15:09Z

1

There is no error....

or may be i misunderstood your question:

<?php

$url = "";

$subCat = 70; // 78

$mainCat = 1;

if ($mainCat && $subCat == 78) {
    $url = "subcat 78";
}
elseif ($mainCat && $subCat && $subCat != 78) {
    $url = "url other";
}

echo $url;

?>

answered Sep 9, 2015 at 12:15

Deepak

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Comments

RustyIngles · Accepted Answer · 2015-09-09 12:22:22Z

0

In the end, I fixed it by doing:

$diffCats = array('76','77','78','79','80');

if ($mainCat && $subCat) {
    $url = "/subjects/".$mainCat->alias."/".$r->alias;

    if (in_array($subCat->id, $diffCats)) {
        $url = "/subjects/".$mainCat->alias."/".$subCat->alias."-language-trips/".$r->alias;
    }

}

answered Sep 9, 2015 at 12:22

RustyIngles

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