The validation file can not find the form data - php

Question

I've made two files php, one of the has the validation php code and another has the form where I input some data, but looks something is wrong with Switch command, look many time to find the problem but unfortunately I did not get true.
Here is my code;
First file where I've FORM
<form action="Validation_search_02.php" method="post">
<label>Your favourite fruit:<input type="text" name="t_Opst" id="t_Opst"></label>
<input type="submit" name="G_mby" id="G_mby">
</form>
The second file where I've the validation file(php)
<?php
if(isset($_P0ST["G_mby"])){
$L_ings=$_POST["t_Opst"];
switch($L_ings){
case "Apple":
echo "Your favourite fruit is $L_ings";
break;
case "Pear":
echo "Your favourite fruit is $L_ings";
break;
case "Banana":
echo "Your favourite fruit is $L_ings";
break;
case "Mango":
echo "Your favourite fruit is $L_ings";
break;
default:
echo "You should eat some fruit";
}
}
?>

Answer 1

In your php file you can verify if there is a POST request, when it comes to your code there is no need for a switch because there is a repetition of the same code several times, you can use an if and or clauses instead. Try this:
<?php
if ($_SERVER["REQUEST_METHOD"] == "POST"){
$L_ings = $_POST["t_Opst"];
echo "hola";
if($L_ings == "Pear" or $L_ings == "Banana" or $L_ings == "Mango" or $L_ings == "Apple")
echo "Your favourite fruit is $L_ings";
else
echo "You should eat some fruit";
}
?>