Could u help me with code ?
I want to add t that script an option like :
when I type ex. data/pag , then script replaces data with key from mysql db and echo it like: replaced/pag . I mean it only replaces text before first and single "/".
Code :
$wyszukaj=$_GET['wyszukaj'];
$min_wartosc = 1;
if(strlen($wyszukaj)>=$min_wartosc)
{
$wyszukaj =htmlspecialchars($wyszukaj);
$zapytanie=$baza->prepare("SELECT * FROM wyszukiwarka WHERE nazwa LIKE :wyszukaj");
$zapytanie->bindValue('wyszukaj', $_GET['wyszukaj'],PDO::PARAM_STR);
$zapytanie->execute(array($wyszukaj));
if($zapytanie->rowCount()>0)
{
while($wynik=$zapytanie->fetch())
{
echo $wynik['nazwa'] . "<br>";
header('location:http://'.$wynik['login']);
}
}
else
{
echo "brak <b> " . $wyszukaj . " </b> w bazie danych ...";
}
}
else
{
echo "";
}
Related
Hi I am new to PHP and I need to create an array and add both books to the array and than loop through the array this is where I am having trouble
if the price of a book is less than $20.00 output the book’s name and price
if the book’s title comes after the letter R in the alphabet output the book’s title.
My code so far is:
<?php
class Book {
// Properties
public $price;
public $title;
// Methods
function set_price($price) {
$this->price = $price;
}
function get_price() {
return $this->price;
}
function set_title($title) {
$this->title = $title;
}
function get_title() {
return $this->title;
}
}
$first_book = new Book();
$first_book->set_price('$13.95');
$first_book->set_title('Moby Dick');
echo "Price: " . $first_book->get_price();
echo "<br>";
echo "Title: " . $first_book->get_title();
echo "<br>";
$second_book = new Book();
$second_book->set_price('$23.99');
$second_book->set_title('Wuthering Heights');
echo "Price: " . $second_book->get_price();
echo "<br>";
echo "Title: " . $second_book->get_title();
echo "<br>";
$book = array("Moby Dick", "Wuthering Heights");
echo "Book Titles: " . $book[0] . ", " . " and " . $book[1] . ".";
?>
Kind Regurds
Kelly
Seems like you got most of it already, for the rest I would add a function to your Book class to get the first character of the title, and then use the ord (PHP documentation here) to convert it to an integer so you can check if it comes after the letter R.
<?php
// Add this to your Book class to get the first character of the title so we can check
// if the book comes after the letter 'R'
public function get_first_char() {
$titleArray = str_split($this->title);
return reset($titleArray);
}
// Instantiate your books and set properties ...
// Loop over each book
foreach ($book as $bookItem) {
$price = $bookItem->price;
// Right now $price is a string ('$xx.xx'), we need it to be numeric
$price = (float) substr($price, 1);
if ($price < 20) {
echo $bookItem->title;
echo $bookItem->price;
}
// Use the ord function to convert the ascii character into an int
if (ord(strtoupper($bookItem->get_first_char())) > ord('R')) {
echo $bookItem->title;
}
}
?>
I'm learning PHP and i'm trying to show an " €" when and only when $autocollant_total_ht_custom isset.
This is what i wrote :
$euro = " €";
if (isset($autocollant_total_ht_custom)) {
$autocollant_total_ht_custom = $autocollant_total_ht_custom . $euro;
} else echo " ";
However my " €" is always showing even when $autocollant_total_ht_custom is not set.
I spent 75 minutes on it, trying and failing again and again despite researching.
I also tried with !is_null, !is_empty with the same result.
I'm fairly certain that my logic isn't wrong but the way to do it is.
Anyone to the rescue?
Have a nice Saturday everyone !
Mike.
Edit 1:
A little visual aid image
My goal was to only show the content of a cell if there was indeed something in it. By default i could see 0 in the empty cells.
if (!$autocollant_total_ht_lot10) {
$autocollant_total_ht_lot10 = " ";
} else echo "error ";
if (!$autocollant_total_ht_lot20) {
$autocollant_total_ht_lot20 = " ";
} else echo " ";
if (!$autocollant_total_ht_lot50) {
$autocollant_total_ht_lot50 = " ";
} else echo " ";
if (!$autocollant_total_ht_custom) {
$autocollant_total_ht_custom = " ";
} else echo " ";
I know my code must look primitive but it works and i don't see it making a conflict with what we are trying to achieve in the initial question.
Then, as asked, this is what i'm writing in the table row and table data :
<tr>
<td class=table_align_left>A partir de 100</td>
<td><?php echo $autocollant_prix ?></td>
<td><?php echo $autocollant_custom?></td>
<td><?php echo $autocollant_total_ht_custom?> </td>
</tr>
So in short, i'm trying to not show anything if there's no value to be shown (which is currently working) and then adding a " €" after the variable is there's something to be shown.
Edit 2 :
My primitive code : my_code
Edit 3 :
The $autocollant_total_ht_custom is already conditioned to be shown earlier in this statement :
} elseif($autocollant_quantité >= 90 && $autocollant_quantité <= 99){
$autocollant_quantité_lot50 = 2;
} elseif($autocollant_quantité >= 100 && $autocollant_quantité <= 1000){
$autocollant_custom = $autocollant_quantité;
} else echo "entrée invalide";
$autocollant_total_ht_custom = $autocollant_prix * $autocollant_custom;
$autocollant_total_ht_lot10 = $autocollant_prix_lot10 * $autocollant_quantité_lot10;
$autocollant_total_ht_lot20 = $autocollant_prix_lot20 * $autocollant_quantité_lot20;
$autocollant_total_ht_lot50 = $autocollant_prix_lot50 * $autocollant_quantité_lot50;
$pointeuse_total_ht = $pointeuse_prix * $pointeuse_quantité;
$pointeuse_autocollant_offert = $pointeuse_quantité * 10;
$pointeuse_autocollant_offert_total_ht = $pointeuse_autocollant_offert * $autocollant_prix;
$pointeuse_autocollant_offert_total_ht = $pointeuse_autocollant_offert * $autocollant_prix;
I posted my code if that can help.
Mike.
//$autocollant_total_ht_custom = null;
$autocollant_total_ht_custom = "something that isnt null";
//if you switch the variable assignment above you will see it behaves as expected.
$euro = "€";
if (isset($autocollant_total_ht_custom))
{
echo $autocollant_total_ht_custom = $autocollant_total_ht_custom . " " .$euro;
}
else
{
//$autocollant_total_ht_custom wouldn't be set at all if we reach this point, this is why im un-sure what your requirements are. Nothing would be echoed.
echo $autocollant_total_ht_custom;
}
Something like this maybe? It's hard to understand your exact requirements.
IsSet checks if a variable is set to something if its not null then it passes the test, and if you're manipulating strings at this variable then it will never be null, meaning the euro sign will always show up.
If the variable IS null then you fail the conditional test, hit else and echo nothing a null string.
If you can update your answer with what you would expect "$autocollant_total_ht_custom" to be set to, I can help better.
EDIT:
Seems to me you can simplify what you what, basically we are only concerned with echoing a string at all if there is something set, otherwise there's no point doing anything, so your checks could be as simple as
$autocollant_total_ht_lot10 = null;
$autocollant_total_ht_lot11 = "";
$autocollant_total_ht_custom = "1,000";
$euro = "€";
if (isset($autocollant_total_ht_custom))
{
echo 'ht custom';
echo TDFromString($autocollant_total_ht_custom, $euro);
}
//notice this doesnt output anything because it isnt set
if (isset($autocollant_total_ht_lot10, $euro))
{
echo 'lot 10';
echo TDFromString($autocollant_total_ht_lot10, $euro);
}
//notice this does because the string, while empty is something that isnt null
if (isset($autocollant_total_ht_lot11))
{
echo 'lot 11';
echo TDFromString($autocollant_total_ht_lot11, $euro);
}
//lets set it to null and see what happens
$autocollant_total_ht_lot11 = null;
if (isset($autocollant_total_ht_lot11))
{
echo 'lot 11 AGAIN';
echo TDFromString($autocollant_total_ht_lot11, $euro);
}
//it doesnt get printed!
//create a function that takes the string in question,
//and for the sake of your use case also the currency to output,
//that way you could change 'euro' to 'currency'
//and have the sign change based on what the value of the $currency
//string is, eg $currency = "£"
function TDFromString($string, $currency)
{
return '<td>' . $string . ' ' .$currency . '</td>';
}
Live example : https://3v4l.org/r5pKt
A more explicit example : https://3v4l.org/JtnoF
I added an extra echo to indicate (and newlines) which variable is being printed out you dont need it of course!
I'll just note the function name is a good example of a bad function name, as it not only returns a td around the string but also inserts the currency, you may want to name it a little better :)
EDIT EDIT:
A final edit outside the scope of your question, you should look into keeping your data in arrays and working on them instead.
Using the previous example we can reduce the code to just this !
$autocollant_total_ht_lot10 = null;
$autocollant_total_ht_lot11 = "";
$autocollant_total_ht_lot12 = "2,0000000";
$autocollant_total_ht_custom = "1,000";
$euro = "€";
//create an array, and stick all our strings in it, from now, if we need to do something to one of the strings(or all!), we do it through the array
$arrayofLots = array($autocollant_total_ht_lot10, $autocollant_total_ht_lot11, $autocollant_total_ht_lot12, $autocollant_total_ht_custom);
//go over each array 'entry' so the first time is '$autocollant_total_ht_lot10', then '$autocollant_total_ht_lot11' etc
foreach ($arrayofLots as $lot)
{
//and we've been over this bit :)
//$lot is a variable we set so we have something to refer to for the individual array entry we are on, we could just as easily name it anything else
if (isset($lot))
{
echo TDFromString($lot, $euro);
}
}
function TDFromString($string, $currency)
{
return '<td>' . $string . ' ' .$currency . '</td>';
}
Good day. It looks like you are missing the end brace
if (isset($autocollant_total_ht_custom)) {
$autocollant_total_ht_custom = $autocollant_total_ht_custom . $euro;
} else {
echo " ";
}
<? echo $rows['general']; ?><? echo $rows['comment']; ?>
'general' is a text field but 'comment' is a checkmark item. It works fine if I type in the text field or if I select the checkmark; but if I fill the text form and also check the checkmark then I would like them to be separated with a comma and space.
$separation = "";
if(!empty($rows['general']) && !empty($rows['comment'])) {
$separation = ", ";
}
echo $rows['general'] . $separation . $rows['comment'];
if thous are the only 2 field:
echo implode(',', array_filter($rows));
otherwise you can use trim to remove the , if not needed:
echo trim("{$rows['general']},{$rows['comment']}", ', ');
Something like this?
if (($rows['general'] != "") && ($rows['comment'] != "")) {
echo $rows['general'] + ", "+ $rows['comment'];
} else {
echo $rows['general'] + $rows['comment'];
}
The last foreach loop doesn't seem to echo the list I want, it doesn't print anything. How can I fix this? I know it's getting quite complicated but any help would be appreciated.
$allTroopsList = array();
$allMissionsList = array();
while ($mytroops = $alltroops->fetch_assoc())
{
$allTroopsList []= $mytroops;
}
while ($mymissions = $allmissions->fetch_assoc())
{
$allMissionsList []= $mymissions;
}
while($userintroop = $allUsersintroops->fetch_assoc())
{
if($userintroop['userid'] == $_SESSION['userid'])
{
echo "<ul class='troop'>";
echo "<li>" . $userintroop['troopid']. " </li>";
foreach($allTroopsList as $mytroops)
{
if($userintroop['troopid'] == $mytroops['troopid'])
{
echo "<li> Troop description: " . $mytroops['description']. " </li>";
foreach($allMissionsList as $mymissions)
{
if($mytroops['missionid'] == $mymissions['missionid'])
{
echo "<li> Missionname: " . $mymissions['missionname']. " </li>";
echo "<br/>";
echo "</ul>";
}
}
}
}
}
}
foreach($allUsers as $myotherusers)
{
if($userintroop['userid'] == $myotherusers['userid'])
{
echo "<li> other users: " . $myotherusers['username']. " </li>";
echo "<br/>";
}
}
This line:
while($userintroop = $allUsersintroops->fetch_assoc())
is fetching results from a database, right? That'd mean at some point you run out of rows to fetch, and $userintroop will become a boolean FALSE.
Then later on you try to do
if($userintroop['userid'] == $myotherusers['userid'])
which is wrong on two levels - $userintroop will NOT be an array at this point, so it could never have a ['userid'] parameter. And since it's the result of a failed fetch operation, never could have any value OTHER than a FALSE.
So that last loop does execute, but will never produce anything since the conditions for producing output are literally impossible to meet.
I am trying to process a form that is dynamically created and therefore varies in length. The while loop seems to work fine. However, the 'if' statement is not; it should only print the startId$i and corId$i if and only if the form's particular text field was filled in. The code is printing a line for every text field on the form, regardless of if it was left empty or not.
$i = 0;
while(!is_null($_POST["startId$i"])){
if(($_POST["startId$i"]) != ""){
echo "startId: " . $_POST["startId$i"] . " ---<br>";
echo "corId: " . $_POST["corId$i"] . " ---<br>";
}
$i++;
}
$i = 0;
while(isset($_POST["startId$i"])){
if( !empty($_POST["startId$i"]) ){
echo "startId: " . $_POST["startId$i"] . " ---<br>";
echo "corId: " . $_POST["corId$i"] . " ---<br>";
}
$i++;
}
Can you manage with fields names ?
If yes, better way is to name inputs with name="startId[0]" and name="corId[0]" and so on...
Then in PHP you just do:
$startIds = $_POST['startId'];
$corIds = $_POST['corId'];
foreach ( $startIds as $k => $startId ) {
if ( !empty($startId) ) {
$corId = $corIds[$k];
echo "startId: " . $startId . " ---<br>";
echo "corId: " . $corId . " ---<br>";
}
}
You should use empty() in this case:
if(!empty($_POST["startId$i"])) {
...
}
I suggest to check the real content of $_POST. You can do that via var_dump($_POST);
You may find out, for example, that the empty fields contain whitespaces. In that case the trim() function may help.
For example:
while(isset($_POST["startId$i"])){
if(trim($_POST["startId$i"])){
echo "startId: " . $_POST["startId$i"] . " ---<br>";
echo "corId: " . $_POST["corId$i"] . " ---<br>";
}
$i++;
}