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PHP - Limit Text Area Based On Input
Hi,
I am trying to limit an user's input based on a text area size which is 180px. Is this even possible? There are ways to read how many linebreak's (\n) there are in a text area, but a long sentence will read as one linebreak. Any Ideaas? Similar TutorialsI'd like to use a text editor like this one: http://tinymce.moxiecode.com/examples/full.php for my forums. But I am not sure exactly how I would prevent abuse and injects to messed up the page, rather than being contained in the designated area it is meant for. Could some one please help me, I know htmlspecailchars will not work, since some of the code needs to render as html Unless buffer overflows or breaking out of code to perform a new command are problems that have been solved.... I am trying to figure out the proper PHP method for setting a boundary on a variable within a script. I have this variable $name which is fed a value from $_POST['name'] from a form field. Now this form field is limited in the HTML to accept only 20 characters, but someone could easily edit the form or outgoing post data. So I want to know how to limit the variable size in the script. In other languages it could be something like this: var name(20). So how do I do that in PHP? the idea on what im doing is like a converter, like showing what your name would look like with certain images per letter, when you input text (your name for example) and when you press the submit button you would get a series of images in a row that represent each character that you typed.
here is the example that i did...
<html> <?php OK so i have a textfield and i have everything going to the database and then displaying on the page. Now is there a way to display code on the page but disable it from executing? There are some break tags in there so i would still like them to be executed on the page. Hi
How can limit only required input fields cannot be empty.
<form name="test" method="post" action="test.php"> <label for="quest"> <input type="text" name="quest" /> <!-- REQUIRED --> </label> <label for="answers"> <input type="text" name="answers[]" /> <!-- REQUIRED --> </label> <label for="answers"> <input type="text" name="answers[]" /> <!-- REQUIRED --> </label> <label for="answers"> <input type="text" name="answers[]" /> </label> <label for="answers"> <input type="text" name="answers[]" /> </label> <label for="answers"> <input type="text" name="answers[]" /> </label> <label for="submit"> <input type="submit" name="submit" value="Submit" /> </label> </form>Following function working only on all empty input fields, i need help to enable button when required fields is not empty.
$(document).ready(function() {
var $submit = $("input[type=submit]"),
$inputs = $('input[name=quest], input[name=answers[]]');
function checkEmpty() {
// filter over the empty inputs
return $inputs.filter(function() {
return !$.trim(this.value);
}).length === 0;
}
$inputs.on('keyup', function() {
$submit.prop("disabled", !checkEmpty());
}).keyup(); // trigger an initial blur
});
I hope I can explain what is happening. I have created two forms in PHP. The first 'almost' works, i.e. it shows the data. But I have two problems - 1) the second pulldown menu is always empty and 2) $value from the first pulldown menu ALWAYS equals the last entry thus the last 'if' in the function subdomains ($domains) is always called (but still empty). The code may explain this better than me:
<!DOCTYPE html>
<html>
<body>
<!-- processDomains.php is this file - it calls itself (for testing purposes so I can see what is happening) -->
<form action="processDomains.php" method="post">
<?php
// create the domains array (there are actually several entries in the array but I cut it down for testing)
$domains = array (1 => 'Decommission', 'Migration');
echo "Select Domain:";
echo "<br>";
// Make the domain pull-down menu - this displays correctly
echo '<select name="domain">';
foreach ($domains as $key => $value) {
echo "<option value=\"$key\">$value</option>\n";
}
echo '</select>';
// input doesn't matter what is 'submitted', always goes to last $value
echo '<input type="submit" name="submit" value="Submit">';
// call function subdomains
subdomains ($value);
function subdomains ($domains) {
// define values for each array - each array contains available choices for the subdomain pulldown menu
$migration = array (1 => 'Application Migration', 'Application Patch', 'Application Upgrade');
$decommission = array (1 => 'Applications', 'Servers', 'Storage');
if ($domains === 'Migration') {
echo "Select subdomain:";
echo "<br>";
// Make the Migration pull-down menu
echo '<select name="migration">';
foreach ($migration as $key => $value) {
echo "<option value=\"$key\">$value</option>\n";
}
echo '</select>';
} else if ($domains === 'Decommission') {
/* ===
* since 'Decommission' is the last entry in the 'Domains' pulldown list, $value ALWAYS equals
* 'Decommission' and $domains equals $value. So this menu SHOULD work but is always
* empty. Thus, two problems - the pulldown menu is always empty and $value isn't based
* upon user input.
*/
echo "Select subdomain:"; // this prints so I know I'm in 'Decommission (I eliminated the echo "$domain" to show I'm always coming here)'
echo "<br>";
// Make the 'Decommission' pull-down menu
echo '<select name="decommission">';
foreach ($decommission as $key => $value) {
echo "<option value=\"$key\">$value</option>\n";
}
echo '</select>';
echo '<input type="submit" name="submit" value="Submit">'
) // end of 'if-else'
} // end of function 'subdomain'
?>
</form>
</body>
</html>
Let me say thank you in advance and I appreciate the help! I know I'm doing something (or more than one thing) wrong and I hope someone can tell me what it is.
Best Regards!
Edited by mac_gyver, 19 January 2015 - 09:37 PM. code tags around posted code please I’m trying to construct a button that simply writes an "aleph" character into a text area, see below.
My code does not work, can anyone tell me why ? How should I fix it ?
<!DOCTYPE html>
<html>
<meta charset="UTF-8">
<head>
<title>Example</title>
<script type="text/javascript">
//JavaScript code goes here
function insertAtEnd(text)
{
var theArea = document.getElementById("thisArea");
theArea.value += '' + text + '';;
}
</script>
</head>
<body>
<input type="button" id="aleph" name="aleph" value="Write an aleph"
onClick="javascript:insertAtEnd(\'<span>א</span>\');return(false)" />
<textarea id="thisArea"> </textarea>
</body>
</html>
i am creating a responsive website.
I'll give you an example.
I am retriving 100 items from mysql database using php. I am only showing 20 items per page using simple pagination with arrows. I keep this format on desktop and tablets. However, I would like to show less items when I am viewing the page on a smartphone. So instead of 20 items per page, it'll show 5 items per page along with the pagination arrows.
I was wondering if this is possible with PHP or would I have to use javascript?
Hi
I have a form that has a drop-down with a few to choose from, unfortunately I don't get results for some due to the query involved.
Some need the AND channel LIKE '%$channel%'"; and some don't and therefore will not get desired results. So I would like to run two queries one with and one without.
$query = "SELECT * FROM asterisk_cdr WHERE calldate BETWEEN '$calldate' AND '$calldate2' AND clid LIKE '%$clid%' AND channel LIKE '%$channel%'";
Thanks
I want to add a text area to this so when an Administrator of the site clicks the refusal button, they will be able to type in a reason for the refusal. Code: [Select] <?php echo '<a href="adminDeleteGoodie.php?delete_id=' . $delete_s_find . '" onClick="return confirm(\'Are you sure you want to delete ' . $makesure_s . ' from the Goodies Approval List? If so, please leave a reason for the upload being denied. NEED A TEXT AREA RIGHT HERE \');"><img src="images_new/remove.jpg" border="0" /></a>'; ?> Hello! Im new here and want to start my new php carreer Well, I'm already working quite hard, but now I don't know what to do I've got it so far: <?php echo html::chars($message->text); ?> Is there any way I could modify the output, so it just displays the first 20 characters or so? Thank you all very much! Hello all, looking for some help here as I seem to be fairly stuck... this yields no results at all and I give up, I need help!
The user should be able to select an employee from a select field, and based on their selected we should be able to grab the start time and end time of that empoyee, which resides on the database.
My form:
<form action=".php" name="absence" id="absence" method="post">
Employee:
<select name="empid" class="clockinputs" required>
<option value=""></option>
<option value='20'>Bob Jones</option>
<option value='13'>Bob Phones</option>
<option value='93'>Bob Lomes</option>
<option value='30'>Bob Somes</option>
<option value='107'>Bob Pomes</option>
<option value='74'>Bob Womes</option>
</select>
Shift Start: <input type="text" name="startshift" id="startshift" class="clockinputs" data-inputmask="'mask': '99:99:99'" required>
Shift End: <input type="text" name="endshift" id="endshift" class="clockinputs" data-inputmask="'mask': '99:99:99'" required>
<input type="hidden" name="eid" value="<?php echo $row{'EID'}; ?>">
<input type="submit" value="Save">
</form>
Javascript:
<script type="text/javascript">
jQuery(document).ready(function(){
jQuery('#empid').live('change', function(event) {
$.ajax({
url : 'absence-get.php',
type : 'POST',
dataType: 'json',
data : $('#absence').serialize(),
success: function( data ) {
for(var id in data) {
$(id).val( data[id] );
}
}
});
});
});
</script>
And absence-get.php:
<?php
$e = $_POST['empid'];
$result = mysql_query("SELECT * FROM employees WHERE EID='$e' ");
$row = mysql_fetch_array($result, MYSQL_ASSOC)
$startshift = $row{'startshift'};
$endshift = $row{'endshift'};
$arr = array( 'input#startshift' => $startshift , 'input#endshift' => $endshift );
echo json_encode( $arr );
?>
Anyone spot anything? Thank you!
im wanting to change the sql in my query based on if a field is empty or not. if the field is empty then i dont want it to post anything, but if its not empty then it can post the content. heres what i have so far but it does post the content even if the field is empty. (!empty($password)) ? $pass_sql = "u_password = '$password'," : $pass_sql = null; $link->query("UPDATE ".TBL_PREFIX."users SET $pass_sql u_allow_user_pm = '".$_POST['allow_user_pm']."' WHERE u_username = '".$_POST['user_name']."'") or die(print_link_error()); how can i stop it from updating if the field is empty? Note that my code still use the old mysql query and I am aware of that. I want to migrate it to mysqli soon but it will have to wait until I learn how to do so. Meanwhile, please help me with the code that I have now. Thank you
I've looked around the internet to find how to do this and I found two methods:
htmlspecialchars();
and
mysql_real_escape_string();
I wrapped my text into one of the two function in order to pass in text with apostrophe in it to the database.
However I encountered a problem.
With mysql_real_escape_string, I got the desired effect that I want but the problem is that, the function also apply its effect onto html img tag. So <img src="test"> turns into <img src=/"test/"> and therefore images (and also links) will not appear.
With htmlspecialchars, again I got the desired function that I want which is to pass in apostrophe into the database. The problem with this is that when I pull the data out from the database and echo it onto my page, it doesn't render and show as a plain html code.
What confuse me a lot is that, it works fine inside my localhost.
Please help
Thank you!
Attached Files
content-insert.php 3.92KB
4 downloads How can I make this textarea box height larger? The width is fine but I need to make it a little taller so I don't have to scroll to see what I've typed in. Thanks Code: [Select] <tr> <td colspan="4"><b>Notes:</b> <textarea style= "width: 100%"> </textarea> </td> </tr> Hi, I've been asked to modify a section on a site for a local club. Basically, I've been asked to improve the name input section (a user may have to input up 15 names in one visit to the site). At the moment the site works like this: The user enters one members first name in one form box, then the surname in another, then presses "add name" which adds it to the list. What i want to be able to do (and i'm sure i've seen it somewhere), is have the user enter the list of names into one big text area: Type in the first name then the surname, hit enter for a new line in the text area then type the next name....etc. When the list is complete press "add names" button. Is there a name for this type of input? And does it work on the following principle: 1. The entire text sent from the text area can be exploded into an array using the line break as the delimiter 2. Each value in the array is then the first name and second name. 3. I can then explode each value further now using the space as the delimiter. 4. I am left with a bunch of arrays containing the first name in one value and the surname in the second Any help or pointers here would be class Cheers, John Hi there, I found a Javascript with what I want, but I want it to be in PHP because if people don't have Javascript enabled, they won't see the login. Here is what I have, but I need it to be converted to PHP: Code: [Select] function loginArea() { val = document.loginForm.password.value; switch(val) { case "password1": document.location = 'http://www.google.com/password1-page/'; break; case "password2": document.location = 'http://www.google.com/password2-page/'; break; default: document.location ='http://www.google.com/sorry/'; break; } } Code: [Select] <form name="loginForm" id="loginForm" method="post" action=""> <input name="password" type="text" id="password" maxlength="5" /> <input name="login" type="button" id="login" value="Check" onclick="loginArea()" /> </form> Help? - Steph Hi people, I really hope you guys can help me out today. I'm just a newbe at php and i'm having real trouble. Bassically all I want to do is have a user type in a company name in a html form. If what the user types in the form matches the company name in my php script i want the user to be sent to another page on my site. If what the user types in the form doesnt match the company name in my php script i want the user to be sent to a differnt page like an error page for example. this is my html form: Code: [Select] <form id="form1" name="form1" method="post" action="form_test.php"> <p>company name: <input type="text" name="company_name" id="company_name" /> </p> <p> <input type="submit" name="button" id="button" value="Submit" /> </p> </form> And this is the php code I'm trying to process the information on: Code: [Select] <?php $comp_name = abc; if(isset ($_POST["company_name"])){ if($_POST["company_name"] == $comp_name){ header("Location: http://www.hotmail.com"); exit(); } else{ header("Location: http://www.yahoo.com"); exit(); } } ?> The thing is i'm getting this error when i test it: Warning: Cannot modify header information - headers already sent by (output started at D:\Sites\killerphp.com\form_test.php:10) in D:\Sites\killerphp.com\form_test.php on line 17 Please can some one help me out, i'm sure this is just basic stuff but i just cant get it to work Cheers. Hi! I have a text area on my webpage which takes in user php scripts and produces an output in an adjacent window. I am trying to find out how I can auto include some php tags into the input text area so that the user doesn't have to keep typing them in every time. Code: [Select] <form name="form1" method="post" ACTION="editor.php"> <textarea rows="10" cols="60" id="code" name="code"></textarea> <span class="submitbutton">Test code</span> </form> Thanks in advance, Jay Hi, Im trying to make a script to mass update a load of links in my database but im stuck on the basics, How can i detect a new line in a text area? Anyone know why this dosen't work? Code: [Select] <?php if($_POST[newlinks]) { $newlinks = preg_split("\n", ($_POST['newlinks'])); $i = 1; foreach ($newlinks as $newlink) { echo "$i - $newlink <br />"; $i++; } } else { echo "<form method=\"POST\" action=\"changehost.php\">"; echo "<br /> <strong>Enter the new links to try and replace old ones</strong> <br />"; echo "<textarea rows=\"16\" name=\"newlinks\" cols=\"84\"></textarea>"; echo "<input type=\"submit\" value=\"Submit\" name=\"B1\">"; ?> |
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