See if a checkbox was selected in PHP

Question

See if a checkbox was selected in PHP

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#1 by (2 votes)
#2 by (1 votes)

1

I want to validate and execute PHP code depending on whether you click checkbox or not. In the form this this:

<input type="checkbox" name="checkbox" value="marcado">
<input type="submit" name="">

And in PHP I have:

if (!empty($_POST['checkbox'])) {
    echo "MARCADO";
    echo "<br/>";
    echo $_POST['checkbox'];
} else {
    echo "ERROR";
    echo "<br/>";
    echo $_POST['checkbox'];
}

But it always shows the ERROR message, whether or not you click checkbox .

html php

asked by Piropeator 12.07.2018 в 22:44

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2 answers

1

if (isset($_POST["checkbox1"])) {
   echo $_POST["checkbox1"];
} else {
   echo "error";
}

answered by 12.07.2018 в 22:57

How can I add two long integers passed as a string? c # Problems in validating unique values

score 2 · Accepted Answer

Is it necessary to use PHP? A very simple way to do it is to use jQuery, so that it is an AJAX that takes care of such a request. For this it would be necessary to add an id to the checkbox:

<input id="cbx1" type="checkbox" name="checkbox1" value="marcado">
<input type="submit" name="">

And the jQuery in question:

$(document).ready(function() {
   $("#cbx1").click(function() {
       if ($(this).is(":checked")){
         doChecked(); // Función si se checkea
       } else {
         doNotChecked(); //Función si no
       }
   });
});