Basically what i mean is i want to echo a piece of a php using a php method code below is getting errors
<?php
$myString = '<?= $_GET['content'] ?>';
echo $myString;
?>
maybe theres a javascript alternative?
full code below
<?php
if (in_array($_GET['content'], array(tree, 3, 4, 5)) ) {
$myString = "<?= $_GET['content'] ?>";
$myParsedString = htmlentities($myString);
echo $myParsedString;
}
else {
echo "nothing to see here";
}
?>
you can directly access $_GET inside <?php ?>no need to use tag again inside :try this.
$myString = $_GET['content'];
This should work for you:
if ( in_array($_GET['content'], array("tree", 3, 4, 5)) ) {
$myString = $_GET['content'];
echo $myParsedString = htmlentities($myString);
} else {
echo "nothing to see here";
}
No need to use another PHP tag inside PHP tag. Simply can try this
<?php
if (in_array($_GET['content'], array('tree', 3, 4, 5)) ) {
$myString = $_GET['content'];
$myParsedString = htmlentities($myString);
echo $myParsedString;
}else {
echo "nothing to see here";
}
?>
Just escape the PHP code you get and then u can echo it
$myString = mysql_real_escape_string('<?= $_GET['content'] ?>');
echo $myString;
I hope that helps
Related
I have a script that needs to execute on page load based on a session value but it is not working (500 error in dev console).
<?php
if ($_SESSION["CONNECTION_CHECK"] == "1") {
echo "<script>";
echo "document.getElementById("CONNECTION_OK").style.display = "block";";
echo "</script>";
}
?>
I tried with and without "echo" but the result is the same.
I have another piece of code that is kind of similar and it does work.
<?php if ($output == 1) : ?>
<script>
document.getElementById("CONNECTION_OK").style.display = "block";
</script>
<?php endif ?>
I tried modifying this to include the if statement but it didn't work.
<?php if ($_SESSION["CONNECTION_CHECK"] == "1") : ?>
<script>
document.getElementById("CONNECTION_OK").style.display = "block";
</script>
<?php endif ?>
How can I fix this?
Try following code.
<?php
if ($_SESSION["CONNECTION_CHECK"] == "1") {
echo "<script>";
echo "document.getElementById('CONNECTION_OK').style.display = 'block';";
echo "</script>";
}
?>
you cannot put double indention in double indentation block.
If you wish to use double quotes inside double quotes, you must escape them with an Slash ():
if ($_SESSION["CONNECTION_CHECK"] == "1") {
echo "<script>";
echo "document.getElementById(\"CONNECTION_OK\").style.display = \"block\";";
echo "</script>";
}
I am using following code to pass PHP variables to javascript. but it is not working.
function gto(str) {
document.getElementById('goto').action = str;
document.getElementById('ID').value = <?php echo "$userid" ?>;
document.getElementById('name').value = <?php echo "$user_name" ?>;
document.getElementById('gname').value = <?php echo "$usergname" ?>;
document.getElementById('fmname').value = <?php echo "$userfname" ?>;
document.getElementById('img').value = <?php echo "$userimg" ?>;
document.getElementById('email').value = <?php echo "$useremail" ?>;
document.getElementById('goto').submit();
}
Following is the PHP code
<?php
if($_POST["name"] == null)
{
$user_name = 'Annomyous';
}
else{
$user_name = $_POST["name"];
$userid= $_POST["id"];
$usergname= $_POST["gname"];
$userfname= $_POST["fname"];
$userimg= $_POST["img"];
$useremail= $_POST["email"];
}
echo "<p style='color : white'>$user_name";
echo "$userid" ;
echo "$gname";
echo "$fname";
echo "$img";
echo "$email";
echo "$user_name";
echo "$user_name</p>";
$user_name =htmlspecialchars($user_name);
$user_name =str_replace("<script>","", $user_name);
?>
the output is a follows:
ReAlItY TuTs104598758504708047866ReAlItY TuTsReAlItY TuTs//this is php echo output.
JAVASCRIPT OUTPUT:-
function gto(str) {
document .getElementById('goto').action = str;
document.getElementById('ID').value = ;
document.getElementById('name').value = Annomyous;
document.getElementById('gname').value = ;
document.getElementById('fmname').value = ;
document.getElementById('img').value = ;
document.getElementById('email').value = ;
document.getElementById('goto').submit();
}
Function gto is called here:
<button class="w3-btn header-btn" onclick="gto('Contact.php');">Contact Us</button>
I can see in PHP output I am getting all variable output.
but nin juavascript im getting only Annonymous why????
I need to pass post variables to contact us so i am using the form tag and javascript but this is not working Please help me!
Thanks in Advance
values from php to js can be passed in many ways, here's one of them
try to pass the php values when calling the js function, like this:-
<button onclick="gto('Contact.php','<?php echo $userid;?>','<?php echo $username;?>');">Contact Us</button>
and then get values on js function like this:-
function gto(str,userid,username) {
document .getElementById('goto').action = str;
document.getElementById('ID').value = userid;
document.getElementById('name').value =username;
}
that's it, now use the values in js as your wish
Uh, found another issue. The js is in smart quotes, which won't work... "`" is invalid. use "'".
Also, w3schools can't handle php in their editor, so it's no use.
Example for POST requests: https://www.w3schools.com/code/tryit.asp?filename=FQSA8MJYGJ47
Hope this helps.
I need to get javascript variable value in php file.
html example:
UPDATE:
$html = '
<script>
window.runParams.adminSeq="3423423423423";
window.runParams.companyId="2349093284234";
</script>';
Shout I use regex ? regex is very complex to me... any help ?
<?php
$html = '<script>
window.runParams.adminSeq="3423423423423";
window.runParams.companyId="2349093284234";
</script>';
$variables = ["adminSeq", "companyId"];
$counter = 0;
foreach($variables as $variable) {
preg_match_all('/"(.*?)"/', $html, $matches);
${"$variable"} = ($matches[1])[$counter];
$counter++;
}
echo $adminSeq; // Prints out: 3423423423423
echo $companyId; // Prints out: 2349093284234
?>
You can also use GET requests to do this. The link would look like http://localhost/?adminSeq=3423423423423&companyId=2349093284234 then get out these values in PHP with:
<?php
$adminSeq = $_GET["adminSeq"];
$companyId = $_GET["companyId"];
?>
So what I'm trying to do is the following:
first: When the button add-location is clicked this loads a php file using AJAX.
jQuery
$('.add-location').click(function() {
var locationName = $(this).data('location');
$.post('http://www.example.com/reload-location-2.php?addparam',
{locationName: locationName}, function(data) {
$("textarea#location").html(data);
})
});
PHP FILE
<?php start_session();
$locationName = array_key_exists('locationName',
$_POST) ? (string) $_POST['locationName'] : '';
if(isset($_GET['delparam'])){
unset($_SESSION['locations'][$locationName]);
}
if(isset($_GET['addparam'])){
$_SESSION['locations'][$locationName] = $locationName;
}
?>
<?php foreach ($_SESSION['locations'] as $location): ?>
<?php echo htmlspecialchars($location); echo "\n"; ?>
<?php endforeach;?>
This all works like a charm! No worries here. No what I'm trying to do is when the button add-location is clicked this echo's the following code to a div called textarea#thema.
<?php foreach ($_SESSION['products'] as $product): ?>
<?php echo htmlspecialchars($product); echo "\n"; ?>
<?php endforeach;?>
OR, if that's easier when the page is loaded -> echo that code to the textarea#thema div.
I do not understand AJAX that much but I'm getting there. But I think the last option maybe the easiest solution?
Could anyone help me figure this one out?
What I tried
Right now, When the button add-location is clicked I reload a previous jQuery script:
$('.add-location').click(function() {
var productName = $(this).data('product');
$.post('http://example.com/reload-2.php?addparam',
{productName: productName}, function(data) {
$("textarea#thema").html(data);
})
});
This works, but it adds an extra <p>-tag leaving me with a line break in the code.
I also changed the .html(data); to .val(data); for the textareas. Also I made a new PHP file with just this code:
<?php foreach ($_SESSION['products'] as $product): ?>
<?php echo htmlspecialchars($product); echo "\n"; ?>
<?php endforeach;?>
And this jQuery code:
$('.add-location').click(function() {
var productName = $(this).data('product');
$.post('http://www.example.com/reload-3.php',
{productName: productName}, function(data) {
$("textarea#thema").val(data);
})
});
But still no go... And I don't think this is the way to go?? I hope I gave enough information.
You should use .val() function to fill textarea, not .html().
I have this working script yet when I change it to retrieve(supposedly) the value inside $_SESSION["username"], it doesn't retrieve anything. The whole page is saved as .php as I am using some codes that uses PHP.
Code:
echo "<script type=text/javascript>";
echo "var hidden = false;";
echo "function actiondb1() {";
echo "if(!hidden) {";
echo "document.getElementById(\'clickdb1\').style.visibility = \'hidden\';";
echo "document.getElementById(\'db1\').style.visibility = \'visible\';";
echo "document.getElementById(\'db1\').disabled = false;";
echo "document.getElementById(\'db1\').value =".$_SESSION["username"];.";";
echo "}";
echo "}";
echo "</script>";
How can I make the script to properly retrieve the data inside $_SESSION["username"];?
Observe that, for instance, if the value of $_SESSION["username"] is John, your echo will be generating this result:
document.getElementById('db1').value = John;
But John is supposed to be a string and should be wrapped in quotation marks, otherwise JavaScript will understand it as a variable name (which value will be probably undefined).
As Havenard mentioned, this line is missing Javascript single quotes to properly denote a string variable:
echo "document.getElementById(\'db1\').value ='".$_SESSION["username"];."';";
However, you really shouldn't print JS out with PHP if you can help it. Though iatboy's answer answer won't ultimately fix your bug, it is a much cleaner way of doing things.
?>
<script type=text/javascript>;
var hidden = false;
function actiondb1() {
if(!hidden) {
document.getElementById('clickdb1').style.visibility = 'hidden';
document.getElementById('db1').style.visibility = 'visible';
document.getElementById('db1').disabled = false;
document.getElementById('db1').value ='<?php echo $_SESSION["username"];?>';
}
}
</script>;
<?php
Did you start session in this page?If you didn't,use the follow code to start session.
session_start();
Then change your code to
echo "<script type=text/javascript>";
echo "var hidden = false;\n";
echo "function actiondb1() {\n";
echo "alert('".$_SESSION['username']."')\n"; //test code
echo "if(!hidden) {\n";
echo "document.getElementById('clickdb1').style.visibility = 'hidden';\n";
echo "document.getElementById('db1').style.visibility = 'visible';\n";
echo "document.getElementById('db1').disabled = false;\n";
echo "document.getElementById('db1').value ='".$_SESSION["username"]."';\n";
echo "}\n";
echo "}\n";
echo "</script>";
it will be ok.