I am not quite sure why have I not been able to call a function from say File1 to File2 . I have used the require_once also .
Eg :
File1.php
<?php
function Test()
{
alert("Hello");
}
?>
File2
<?php
require_once("File1.php");
My code
?>
<script type="text/javascript">
My code....
$("#email_summary").click(function() {
<?php
Test();
?>
});
</script>
Could you please let me know my mistake ?
Thanks guys :)
you can not call php function by JavaScript like you did
$("#email_summary").click(function() {
Test();
});
</script>
should be
$("#email_summary").click(function() {
<?php echo Test(); ?>
});
</script>
and
function Test()
{
return 'alert("Hello")';
}
edit: if you want to make it work like your code you can do this by
File1.php
<?php function Test() { ?>
alert("Hello");
<?php } ?>
and than just include like
<?php
Test();
?>
Related
How do I load a script if a PHP condition is true?
For example, I got an external script called script.js and I wanna load this if it's on the product page of WooCommerce.
I've tried the following but it doesn't work because it prints the code on the page:
<?php
add_action( 'template_redirect', 'check_product_page' );
function check_product_page() {
if(is_product()) {
include ('script.js');
}
}
?>
If I write the script inside a PHP like the below, it causes a fatal error:
<?php
echo
'<script type="text/JavaScript">
window.addEventListener("load", function() {
//some code here...
})
</script>';
?>
Try this:
<?php
if($condition == true){
echo '<script type="text/javascript" src="script.js"></script>';
}
?>
or:
<?php if($condition == true): ?>
<script type="text/javascript" src="script.js"></script>
<?php endif; ?>
Actually this works on my side, checkout maybe you have another issue:
echo '<script type="text/JavaScript">
window.addEventListener("load", function() {
//some code here...
})
</script>';
It's because the single quotes are inside your string. You should actually do it the way which other people have shown, but if you need it to be an inline script you can do it like this:
<?php
//some php can go here..
?>
<script type="text/JavaScript">
window.addEventListener("load", function() {
//some code here...
})
</script>
<?php //more php can go here... ?>
How do I call my functions from functions.php to html.php with the use of AJAX? I want to declare my functions inside my html.php file without using include or require. only ajax pls. Thanks allot! see below
functions.php
<?php
function samplefunc(){
echo "Hello world";
}
?>
html.php
<html>
<body>
<?php samplefunc(); ?>
</body>
</html>
add the below code in html.php
$.post("functions.php", {call_function: samplefunc})
.done(function(response) {
alert(response);
}
and add below code in functions.php
function samplefunc() {
echo 'Answer';
}
if ($_POST['call_function'] == "samplefunc") {
samplefunc();
}
I am trying to call a javascript function from php. According to all of the examples I have been looking at the following should work but it doesn't. Why not?
<?php
echo "function test";
echo '<script type="text/javascript"> run(); </script>';
?>
<html>
<script type="text/javascript">
function run(){
alert("hello world");
}
</script>
</html>
Your html is invalid. You're missing some tags.
And you need to call the function after it has been declared, like this
<html>
<head>
<title></title>
<script type="text/javascript">
function run(){
alert("hello world");
}
<?php
echo "run();";
?>
</script>
</head>
<body>
</body>
</html>
In this case you can place the run before the method declaration, but as soon as you wrap the method call inside another script tag, the script tag has to be after the method declaration.
Try yourself http://jsfiddle.net/qdwXv/
the function must declare before use
it should be
<html>
<script type="text/javascript">
function run(){
alert("hello world");
}
<?php
echo "function test";
echo run(); ;
?>
</script>
</html>
As others have suggested, the function needs to be declared first. But, if you need to echo out the JavaScript from PHP first, you can either store it in a PHP variable to echo out later, or have your code wait for the dom to finish loading first...
document.ready = function() {
run()
}
If you're using jQuery or another framework, they probalby have a better way of doing that... In jQuery:
$(function(){
run();
})
This code is very simple so I feel like it could be shortened by relating the php variable to the jquery function parameter. if you have any ideas, please help. thank you
<script type="text/javascript">
<?php if (is_page($toppageID1)) { ?>
$(document).ready(function () {
Show('1');
});
<?php } elseif (is_page($toppageID2)) { ?>
$(document).ready(function () {
Show('2');
});
<?php } elseif (is_page($toppageID3)) { ?>
$(document).ready(function () {
Show('3');
});
<?php } elseif (is_page($toppageID4)) { ?>
$(document).ready(function () {
Show('4');
});
<?php } elseif (is_page($toppageID5)) { ?>
$(document).ready(function () {
Show('5');
});
<?php } elseif (is_page($toppageID6)) { ?>
$(document).ready(function () {
Show('6');
});
<?php } elseif (is_page($toppageID7)) { ?>
$(document).ready(function () {
Show('7');
});
<?php }; ?>
</script>
Have something like $somevalue that would help to switch instead of elseif.
<script>
<?php switch($somevalue){ ?>
$(document).ready(
function (){
<?php case 1: //?>
<?php case 2: //?>
<?php case 3: //?>
<?php case 4: //?>
<?php case 5: //?>
}
)
<?php } ?>
</script>
First off I would change that function of yours is_page to page and return a string with the ID. You already have access to those $toppageID variables in PHP so why not use them in the function itself. If you absolutely cannot for scoping or other reasons, pass them all in the function at once. You want a single output not executing the function numerous times.
Example script using the re-factored function page:
<body>
...
<!-- end of body -->
<script type="text/javascript">
(function(id) {
if(id) {
Show(id);
}
else {
// throw some error or something
}
})(<?php echo page() ?>);
</script>
</body>
If you need to funnel all the variables at once maybe something like this:
})(<?php echo page($toppageID1,$toppageID2,$toppageID3,...) ?>);
SOrry if I was unclear but im using wordpress functions. a switch works great.
<?php $currID = get_the_ID(); ?>
$(document).ready(function () {
});
How do i do in jquery, to check if there's anything in isset SESSION user_message, each 1 seconds, and if there is then display #box else dont..
thanks
PHP file (session.php):
<?php if( isset($_SESSION) ){echo 1;}?>
JS file:
function checkSession(){
$.ajax({url: "session.php", success: function(data){
if( data == 1){
$('#box').show();
}else{
$('#box').hide();
}
}});
}
setInterval('checkSession()',1000);
This is untested, but it should do what you're looking for. Note that, typically, AJAX request expect XML or JSON, so you can reformat the session.php file the way you want.
Use PHP to echo the jQuery command:
if (isset($_SESSION['user_message'])) {
echo '<script> $("#box").… </script>';
}
This will only echo the following if $_SESSION['user_message'] is set:
<script> $("#box").… </script>
Simple as this:
<?php
if (isset($_SESSION['user_message']))
{
?>
<script>
$('#box').show(2000);
</script>
<?php
}
?>
Or you can use fadeIn or fadeOut with specified time.
<?php if (isset($_SESSION['user_message'])) { ?>
<script type="text/javasscript">
$("#box").show(1000);
</script>
<?php } ?>