php list error with my sql values - php

Question

Hi guys i'm trying to output my database values in a datalist
this is my code
my query works:
but my datalist is empty

Answer 1

Your syntax is incorrect:
echo "<input id="numero" list="posti1" >
<datalist id="posti1" >";
Should be:
echo '<input id="numero" list="posti1" >
<datalist id="posti1">';
Because you have double quotes in the string, you can use single quotes to contain it.

Answer 2

Try
echo "<input id='numero' list='posti1' ><datalist id='posti1'>";
instead of
echo "<input id="numero" list="posti1" ><datalist id="posti1" >";
If you want to use double quotes inside the double quotes then you need to use slash (\) before the double quote
i.e,
echo "<input id=\"numero\" list=\"posti1\" ><datalist id=\"posti1\">";

Answer 3

That is not only error you having on your script when you done fixing that error you gonna get another error:
bellow are the errors you have:
echo "<input id="numero" list="posti1" >
<datalist id="posti1" >";
echo "<option value="$row[numero]"/>"; // Format for adding options
They should look like this:
echo "<input id=\"numero\" list=\"posti1\">
<datalist id=\"posti1\">";
echo "<option value=\"".$row['numero']."\"/>"; // Format for adding options.
Therefore your full code should be:
<?php
session_start();
$conn = oci_connect('insidedba', 'progetto16', 'localhost/XE');
if (!$conn) {
$e = oci_error();
trigger_error(htmlentities($e['message'], ENT_QUOTES), E_USER_ERROR);
}
echo "<input id=\"numero\" list=\"posti1\">
<datalist id=\"posti1\">";
$sql = oci_parse($conn, "SELECT NUMERO FROM POSTI WHERE PRENOTAZIONE=NULL");
oci_execute($sql);
foreach ($dbo->query($sql) as $row) {
echo "<option value=\"" . $row['numero'] . "\"/>"; // Format for adding options
}
echo "</datalist>";
?>
NB: When you have a double quotes inside double quotes, you will need escape characters.
Some common php escape characters.
\" -Print the next character as a double quote, not a string closer
\' - Print the next character as a single quote, not a string closer
\n- Print a new line character
\t -Print a tab character
\$ -Print the next character as a dollar, not as part of a variable
\ -Print the next character as a backslash, not an escape character

Answer 4

echo "<input id=" numero "list=" posti1 "><datalist id=" posti1 " >";
when php try to read your code line , It sees it as above. it thinks only highlighted words are strings and specially those strings aren't connected by a .dot it throws the syntax error .
best way to fix this is as to do it according to the above answers .,
echo '<input id="numero" list="posti1" > <datalist id="posti1">';