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@ScrapersNbotsJun 21.2018 — #Your ALL wrong. I had been pulling my hair out over this and then figured it out. You forgot the double quotes "
Its not
var phpadd= <?php echo add(1,2);?>; //call the php add function
its ...
<script>
function phpadd() {
var phpadd= "<?php echo add(1,2);?>"; //call the php add function
alert(phpadd) // result in undefined
}
</script>
@NogDogNov 27.2018 — #@ckurir#1598291 Yest there's a simple solution: use a JavaScript function instead of a PHP function. PHP runs on the server before any JavaScript ever even thinks about running on the browser.
@PeterPan_321Nov 29.2018 — #@ckurir#1598291 It is possible to put multiple java script variables into an HTML form who's SUBMIT button calls a PHP function. I think its easier than trying to cajole a way to replace PHP variables directly from you Javascript code. If it IS possible, I think the code would look pretty ugly. In fact I find that the more I want to seamlessly combine javascript and PHP variables, the more convoluted the code becomes, and quite often I hit a roadblock. So either generate 'hidden' values in a form, or another possibility is to use cookies to hold variables. Cookies are available to both javascript and PHP. I often use cookies, for example, to ensure that at the end of an email form which POSTs to PHP code, the browser is returned to the last page they were visiting.
BUT... accessing cookies in PHP is at least as tricky as accessing form variables from a PHP $_POST array, so you'll have to research that method on your own a bit if it sounds workable, and definitely start a new thread for anything related to that subject.@NogDogNov 29.2018 — #If you _really_ need to access something on the server side while remaining in the current page, then AJAX is the way to go, whether you like it or not; and there are enough basic JavaScript AJAX libraries/scripts out there you can use to make it pretty simple. (I.e.: you don't necessarily need to load all of JQuery. ? )
simple way to call php function from javascript
Hello, I understand js is on client side and php is on server side. I am looking for a simple solution to call a php function in javascript
without going throught the fuzz of Ajax, post…
I got a code like this from SO:
[CODE]
<script>
function phpadd() {
var phpadd= <?php add(1,2);?> //call the php add function
alert(phpadd) // result in undefined
}
</script>
<?php
function add($a,$b){
$c=$a+$b;
return $c;
}
?>
<button onclick=’phpadd()’>add</button>
The poster claims it works but it doesn’t for me. And I don’t understand how it would possibly work. Can someone point it out either ways? Thanks.
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@ScrapersNbotsJun 21.2018 — #Its not
var phpadd= <?php echo add(1,2);?>; //call the php add function
its ...
<script>
function phpadd() {
var phpadd= "<?php echo add(1,2);?>"; //call the php add function
alert(phpadd) // result in undefined
}
</script>
0
@NogDogNov 27.2018 — #0
@PeterPan_321Nov 29.2018 — #BUT... accessing cookies in PHP is at least as tricky as accessing form variables from a PHP $_POST array, so you'll have to research that method on your own a bit if it sounds workable, and definitely start a new thread for anything related to that subject.
0
@NogDogNov 29.2018 — #If you _really_ need to access something on the server side while remaining in the current page, then AJAX is the way to go, whether you like it or not; and there are enough basic JavaScript AJAX libraries/scripts out there you can use to make it pretty simple. (I.e.: you don't necessarily need to load all of JQuery. ? )