Calling a php function when onchange fires from input

Question

Hello, I have an input field named result. I want to call a function when something changes in this input. I tried this :

<input onchange="maFonction" id="result" readonly="readonly" type="text" value="0" size = "10" />

And tried to call this function

<?php
function maFonction()
{

$a = 40 ;
if ($result > $a) {

     echo "trop dheure";
     } elseif ($result == $a) {
     ?>
                    <input onclick="s(this.form);" type="button" value="sauvegarder" /> 
        <?php
        } else {
    echo "moins de 40 heures a été effecuté";
}


}
?>

What mistake did I do or what am I missing?

Try something like onchange="maFonction()" using () for a function. — Funk Forty Niner
– Funk Forty Niner, Commented Apr 7, 2014 at 17:23
You can not call a PHP function directly using DOM events. Where is the AJAX call? How does it look like? — emco
– emco, Commented Apr 7, 2014 at 17:24
I don'T have ajax for the moment I know ajax can make it but I don't know how to used it. — TheBaconManWithouBacon
– TheBaconManWithouBacon, Commented Apr 7, 2014 at 17:25

Danny · Accepted Answer · 2014-04-07 17:32:09Z

1

If you realy want to use PHP, call a php file instead a function.

Your form

<form method="post" action="myfunc.php">
    <input type="text" name="myname">
    <input type="submit" value="click" name="submit">
</form>

Your php file: myfunc.php

<?php
function display()
{
    echo "hello ".$_POST["myname"];
}
if(isset($_POST['submit']))
{
   display();
} 
?>

answered Apr 7, 2014 at 17:32

Danny

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2 Comments

TheBaconManWithouBacon Over a year ago

this is not a button this is a input i cannot click . i really need if the number in the input change a message appear.

Danny Over a year ago

it's the idea to know how to call a function() with a form. From here on you know what and how to do...

Alen · Accepted Answer · 2014-04-07 17:29:31Z

0

<input onchange="maFonction()" id="result" readonly="readonly" type="text" value="0" size = "10" />

javascript

maFonction = function(){
$.post("yourFile.php");
}

and your php

<?php

$a = 40 ;
if ($result > $a) {

     echo "trop dheure";
     } elseif ($result == $a) {
     ?>
                    <input onclick="s(this.form);" type="button" value="sauvegarder" /> 
        <?php
        } else {
    echo "moins de 40 heures a été effecuté";
}


}

?>

answered Apr 7, 2014 at 17:29

Alen

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6 Comments

vp_arth Over a year ago

why do you make this request? where you use its result?

Alen Over a year ago

I just call his php function from html using javascript

TheBaconManWithouBacon Over a year ago

the message won't change when the input number change

Funk Forty Niner Over a year ago

How can the input number change when it can't be changed in the first place? readonly="readonly" @TheBaconManWithouBacon

TheBaconManWithouBacon Over a year ago

I have 8 input. 7 to calcul for each day in one week and the last one is the result. If sunday i writes 8 hours , monday 5 hours .. and all of the 7 input is additionated and transfer into the result input. So i already use ajax for calculate the result when i change one of the day number is recalculate automaticly the result exemple : sunday 5, monday 5, tuesday 5, thurday 5, wenesday 5, friday 5, saturday 5 = 25 in the result. if I change monday for 4 in my result they recalculate and show 24. so I want when the number change a msg appear if under 40 superior of 40

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