PHP - Check First Two Characters Of Field

<?php

$title = "This is an example of a sentence in a paragraph";
$title_array = explode(" ", $title); // splits the string by string

$chr_count = array();
foreach($title_array AS $word){
     $chr_count[] = strlen($word);
}
echo $chr_count[0];

$count = count($title_array);

for($i=0; $i<$count; $i++) {
???????
}
?>

i want to store the count for every word in the $title, in a variable, but i get an error. Actually i need the count of every word so that i can store every word which has greater than 5 characters in an array variable! Then i would use this variable to compare words in another paragraph to check whether sentences in the other paragraph contain these words. If they contain these words then i would add the sentence to a variable $summary which would make the summary of the original paragraph.

Any ideas please?

Hi, i'm trying to retrieve and display just the first 50 characters of a field in a table, but when i try to display the result, i keep getting an undefined index error.
Code: [Select]
$text =mysql_query("SELECT LEFT(entry_text,50) FROM entry WHERE entry_id='22'") or die(mysql_error());
     while($row2 = mysql_fetch_array($text)){
     echo "<p>".$row2['entry_text'];
     }When i leave out the " LEFT(entry_text,50)", so that it retrieves all the characters, it works fine. Any ideas?
the exact error i get is
"Notice: Undefined index: entry_text in C:\wamp\www\new\index.php on line 52"

I have a text firld to enter amount af a book,But i need to check whether the data entering is numeric only eg:70.98 etc.
how can i achieve this.

my code is
echo"<table><tr><td></td><td>Amount  in USD</td><td></td><td><input type='text' name='amnt' id='amnt'  /> </td><td></td></tr></table>";

I want to allow Alphabetical strings, Numeric strings, and Alphanumeric strings. For example "Bob", "1234", "bob1234" are all valid.

I want to check if the string has invalid characters, return true if it does (or false, which ever method works).

How can I do it?

This topic has been moved to PHP Regex.

http://www.phpfreaks.com/forums/index.php?topic=313299.0

Hey all. What is the best way to check if a form field has been entered by the user? Because a field left blank by the user still shows up as set with the isset function.

Example:
if (isset($_POST['name']))
{
echo "The field is set";
}

This is a problem if I'm checking if the user has skipped over the name field on a form because an empty value gets passed to the POST array even if the field is left blank.

Do people use empty or a regular expression instead?

Cheers!

Ok so i have registration page on my webs but i didn't work on empty fields so how could i check all fields?
Code: [Select]
//if no name
if(!$name){
$error = "Username missing.";
}
//if no pass
if($pass == false){
$error = "$error,Password missing";
}
//if no pass conf
if($pass_conf == false) {
$error = "$error,Pass conf missing.";
}
//if no email
if($email == false){
$error = "$error,Email missing.";
}
//pass conf
if($pass != $pass_conf){
$error = "$error,Passwords do not match.";
    }
    echo "<script>alert('$error');</script>;";
//header("Location: register.php");
 My script gives same results every time (even if i fill any of fields)...also if i un-comment header command it wont show alert..it just reloads the page

So can anyone help me with this?
Thanks..

I have this script running:


<?php
$query = mysql_query("SELECT * FROM jobs WHERE event = 'Yes' ORDER BY title");
while ($row = mysql_fetch_array($query)) {
?>


How do I check if a field is empty and NOT display it...?

For instance it has a 'applied' field, if that is empty I dont want it to display, however I still  need the event = 'Yes' part.

Pehaps this is kidstuff but i'm a kid at heart.

I have only 1 form field on a form
User enters a special code in the form.
Once submitted the form is queried against a mysql database to see if the code exists.
If code does not exist it must be reentered.
If code exists then redirected.

basically its like "get to the next page if you have the code"

thanks

Hello everybody, i try to check if the unique field inventar exists or not before i insert new record. if the inventar exits the user should get error message. but i dont know how to do this.   thank you very much for your help. Rafal   here is my code

<?php
include("123.php");
$inventar = $link1->real_escape_string($_POST["inp_inventar"]);
$product = $link1->real_escape_string($_POST["inp_product"]);
$price = $link1->real_escape_string($_POST["inp_price"]);

$link1 = new mysqli("$hoster", "$nameuser", "$password", "$basedata") or die ("Connection Error!"); error_reporting (0);
$check_inventar = mysqli_query($link1, "SELECT inventar FROM products WHERE inventar='$inventar'");
$check_inventar_num = mysqli_num_rows($check_inventar);
if (isset($_POST['inp_submit']) AND $check_inventar_num = 0)
{
$query1 = "INSERT INTO products
(inventar, product, price)
VALUES ('$inventar', '$product', '$price')";
$result1 = $link1->query($query1) or die("Database Error!");
if ($result1 == true)
{
header ( 'Location:insert.php' );
}
}
else { echo "there is already product with same inventar id!"; }
mysqli_close($link1);
?>

Hi there once again, sry for previous wrong section, i guess this time i'm on the right place ;p

Well i need following:

I have few forms (input fields) with requested informations, also i have other .php file which i'm calling to send a form. Now i need to know how can i do a check for those fields if they are empty or not. If they are, i need to STOP submiting the form (calling the other .php).

Codes:

Form:
Code: [Select]
<form name="f1" form method="post" action="posalji.php"/>Field:
Code: [Select]
<input type="text" name="hp1" size="20"/>Submit:
Code: [Select]
<input name="f1" type="image" src="registruj.png" onclick="if(f1.hp1.value.length==0) alert('Error: field can't be empty'); else f1.submit(); if(f1.hp2.value.length==0) alert('Error: field can't be empty'); else f1.submit();"/>There are more than one field, that's why you can see more errors in submit. Well all i need is "die" or "stop" calling the "posalji.php" from action above.

Sry 4 poor english.

Hello there,

My current song request form process looks like:

<?php
                if(isset($_POST['submit'])) {
                $to = 'address@website.com' ;  
$name = trim($_POST['name']);
                $message = trim($_POST['message']);
                $artist = trim($_POST['artist']);
                $song = trim($_POST['song']);
$subject="Name:$name - Message:$message - Artist:$artist - Song:$song";
                $headers  = 'MIME-Version: 1.0' . "\r\n";
                $headers .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
                $message = "<table>
                <tr><td>Name</td><td>".$_POST['name']."</td></tr>
                <tr><td>Message</td><td>".$_POST['message']."</td></tr>
                <tr><td>Artist</td><td>".$_POST['artist']."</td></tr>
                <tr><td>Song</td><td>".$_POST['song']."</td></tr>
                </tr></table>" ;
                mail($to, $subject, $message, $headers);
                header('Location: song-requests-success.php');
               }
?>

I'm currently using Javascript for blank validation, however, people seem to be getting through it somehow.

I'm looking to implement PHP checkers that will output back to the request form with something like: Name field blank.

Would this method work?

$name = trim($_POST['name']);
$artist = trim($_POST['artist']);
$song = trim($_POST['song']);
if(empty($name)){
$name1 .= "<br>Name is empty.";
}
if(empty($artist)){
$artist1 .= "<br>Artist is empty.";
}
if(empty($song)){
$song1 .= "<br>Song is empty.";
}

On form:

<?php if(!empty($name)){ echo "".($name1).""; } ?>
<?php if(!empty($artist)){ echo "".($artist1).""; } ?>
<?php if(!empty($song)){ echo "".($song1).""; } ?>

Would recalling the trim's be nessessary as they have already been specified for the email title. Would this need to be implemented into 'isset'.

Many thanks.

I am building a system where people are able to choose a food menu, they can modify each dish if needed and then say how many of each item they need for the order.

So when they pick the breakfast menu, it selects all starters, mains and desserts.  Should something need to be edited (sausages changed to vegitarian sausages) the user should be able to overtype what has been populated from the select statement)

When the form is submitted, the order needs to be linked to the current job which is in a field ssm_job.job_id but the changes to the menu items need to be stored somewhere for the current order only.  This obviously needs to be accessile later so further changes can be made if needed.  I am not sure of the best way to go about this as i am trying not to save every item in another database (just trying to be tidy)

Any advise on this would be greatly appreciated.

I have had help on this project in relation to an sql and the background can be found below, the help has been amazing but as this is a very different question i thought i would start a new thread.

 

Kind Regards

so I have this code:
Code: [Select]
<input type='checkbox' name='title8' value='$title8' /></td><td><strong>$title8</strong> <br /> $date8 <br />$ $price8<input type='hidden' name='price8' value='$price8'> how do I make is so that the hidden field is only going to submit if the checkbox is checked........

I have a form with a gender control made up of two radio buttons.

If the user doesn't fill out this form, nothing gets submitted (i.e name='gender') in the $_POST array.

So how ae you supposed to verify that the form field was left blank, and use that information to say display an error message on the form?

Edited February 16 by SaranacLake