Skip to main content

Javascript code in php

An example to write javascript code in php, escaping quotes:

Suppose this is your requirement. You have to display an image, which has an onclick event, to some function that must accept dynamic php parameters. This is the static code:

<img width="210" border="0" onclick="javascript:load_user('qrp3p0s42ebcsf','local','downloads/882381283.pdf',0);"
style="cursor:pointer;" src="images/stories/watch-now.png">

So first what we do is, prepare the javascript onclick part dynamically in php:

$img_js = ' onclick="javascript:load_user(\''.$user['id'].'\',\''.$user['access'].'\',\''.$file_path.'\',0);" ';

Then add that to the image code. Now this is the final code we write entirely in php:
$user_img is the dynamic image url.

<?php
echo '<img width="210" border="0" style="cursor:pointer;"
src="'.$user_img.'"'.$img_js.' />';
?>

Done :)

Comments

Popular posts from this blog

Retaining checkbox status of a form after submitting it

we will learn here how to post back or retain the value ( status ) of the checkbox. We will use php header redirection to post back the values to our main page where checkbox is present. We will call form page as first page and action or submitted page as second page. The form data will be received by second page and it is supposed to post back the form data back to form page by using query string through address bar. To keep the second page simple we will keep only the redirection part. Here we have excluded the part which takes care if the form passes its validation and execute the actual script (redirection part). Here is the code of our form with two checkboxes, pb-check.php <?php $t1=$_GET['t1']; $t2=$_GET['t2']; if($t1=="yes"){$t1v="checked";} else{$t1v=="";} if($t2=="yes"){$t2v="checked";} else{$t2v=="";} ?> HTML Form code: <form method="post" action="pb-chk.php"> <inp...

Identify the user's browser

Sometimes there arises a need to identify the user's browser. It is pretty easy to find browser with jquery. So if you have included jquery in your page, it takes a simple line to identify the browser:  if ($. browser . msie ) {} // IE if (($.browser.msie) && ($.browser.version == '6.0')) {} // IE6 if ($. browser . opera ) {} // opera if ($. browser . mozilla) {} // Firefox With the help of php, you can get the browser  details with the help of:  $_SERVER['HTTP_USER_AGENT']; Or you can even use the combined version of php and javascript. php + javascript code: <script type="text/javascript"> var string1 = "<?php echo $_SERVER['HTTP_USER_AGENT']; ?>"; // Browser string var myRegExp1 = /Firefox/; var matchPos1 = string1.search(myRegExp1); var myRegExp2 = /Chrome/; var matchPos2 = string1.search(myRegExp2); var myRegExp3 = /MSIE/; var matchPos3 = string1.search(myRegExp3); if(matchPos1 != -1) ...

Facebook connect using graph api

An example of using facebook graph api to authenticate users: Setup a new application in facebook apps and get the app id and secret. Now follow the steps: Remember to give the same url in the below code, as that of the app settings. <?php if( !isset($_GET['code'])) { ?> <a href="https://graph.facebook.com/oauth/authorize?client_id=xxxxxxxx&redirect_uri=http://xxxxxxxxxxxxxxxx/">Connect using Facebook</a> <?php } $code = trim($_GET['code']); if(isset($_GET['code'])) $token = file_get_contents("https://graph.facebook.com/oauth/access_token?client_id=xxxxxxxx&redirect_uri=http://xxxxxxxxxxxxxxx&client_secret=xxxxxxxxxxxx&code=$code"); $token = explode("=", $token); if(isset($_GET['code'])) $user = json_decode(file_get_contents('https://graph.facebook.com/me?access_token='.$token[1]));  print_r($user); ?>