'PHP - How to toggle a change on click of submit button?

Any ideas why the code below does not give current value of statement after submit button is pressed?

php:

if(isset($_POST["switch"])) {
    if($nm === "off"){
        $nm = "on";
    }
    else{
        $nm = "off";
    }
}

html:

<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post" enctype="multipart/form-data">
<input type="submit" value="[ -= toggle =- ] <?php echo $nm;?>" id="tt" name="switch">
</form>
phphtmltoggle


Solution 1:[1]

The issue is here:

    $nm = "off";
if(isset($_POST["switch"])) {
    if($nm == "off"){
        $nm = "on";
    }
    if($nm == "on"){
        $nm = "off";
    }
}

remove all that, and change it to:

$nm = isset($_POST["switch"]) ? "on" : "off";

Because you are simply checking what $nm is set to currently, and you set it to "off" in the beginning, it will always be OFF in your secondary if statement...

Sources

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Source: Stack Overflow

Solution Source
Solution 1 Green Black

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