loop array values - php

Question

Here I access 'date' key values from rows of DB table. And I can echo these values, no problem.
$res = $mysqli->query("SELECT * FROM alfred ORDER BY id ASC");
$row = $res->fetch_all(MYSQLI_ASSOC);
foreach ($row as $key => $value){
$availDate = $value['date'];
echo $availDate.'<br />';
}
This loop above shows all 'date' values from DB, in this case there are 3 dates- "2012-09-25" "2012-09-27" and "2012-09-29".
But then I need to compare each of these 'date' values against values of $date->format('Y-m-d') from the code below and display each date with corresponding "busy" or "available" status into separate <td> of the table. My following version compares only the "last" value of 'date' key - "2012-09-29", but I need to compare each 'date' value from the array above, it means also "2012-09-25" and "2012-09-27". I have tried many versions but still unsuccessful. Any ideas?
$date = new DateTime();
$endDate = new DateTime('+10 day');
for($date->format('Y-m-d'); $date->format('Y-m-d') < $endDate->format('Y-m-d'); $date->modify('+1 day')){
if ($date->format('Y-m-d') == $availDate){
echo '<td>'.$date->format('Y-m-d/D').' busy</td>';
} else {
echo '<td>'.$date->format('Y-m-d/D').' available</td>';
}
}
Here is the result I am getting now:
2012-09-21/Fri available 2012-09-22/Sat available 2012-09-23/Sun available 2012-09-24/Mon available 2012-09-25/Tue available 2012-09-26/Wed available 2012-09-27/Thu available 2012-09-28/Fri available 2012-09-29/Sat busy 2012-09-30/Sun available
But in fact I need to show "busy" status also into <td> of "2012-09-25" and <td> of "2012-09-27" as these also are 'date' values that are existing in $row array. Unfortunately I can not post any images here to show, but I hope my result above gives you the idea.
SOLVED with the help of in_array below:
$aAvailDate = array();
foreach ($row as $key => $value){
$aAvailDate[] = $value['date'];
}
$date = new DateTime();
$endDate = new DateTime('+10 day');
for($date->format('Y-m-d'); $date->format('Y-m-d') < $endDate->format('Y-m-d'); $date->modify('+1 day')){
if (in_array($date->format('Y-m-d'), $aAvailDate)){
echo '<td>'.$date->format('Y-m-d/D').' busy</td>';
} else {
echo '<td>'.$date->format('Y-m-d/D').' available</td>';
}
}

Answer 1

I haven't tested your code, but I think you are running ->format('Y-m-d') unnecessarily here, and this is messing up your logic.
Every time you run that, PHP is turning your object into a string, which you are then comparing against other strings. This won't do anything useful.
Instead, you should be using the features of the DateTime class to compare the objects themselves. The only time you should need to use the format() method is when outputting to the browser, into an SQL query, etc

Answer 2

Although your Question is Unclear but AFAIK
you want to display "Busy" if available date occurs between given date upto 3 Weeks
otherwise display "free"
I would like to suggest you to do this with MySQL (Not tested)
SELECT *,
IF( `DateCol` BETWEEN NOW() AND DATE_ADD(NOW(), INTERVAL 3 WEEK), 'Busy','Free')
AS status
FROM TableName

Answer 3

Try a while loop instead of a foreach. Also, compare the DateTime objects directly, not the formatted strings.
$date = new DateTime();
$endDate = new DateTime('+3 week');
while( $date < $endDate) {
if ($date->format('Y-m-d') == $availDate){
echo '<td class="busy">busy</td>';
} else {
echo '<td>free</td>';
}
$date->modify("+1 day");
}

Answer 4

Something like this? (If I understand what you're trying to do correctly)
<?php
$avail_dates = array();
$res = $mysqli->query("SELECT DATE_FORMAT(date, '%Y-%m-%d') AS availDate FROM alfred ORDER BY id ASC");
$row = $res->fetch_all(MYSQLI_ASSOC);
foreach ($row as $key => $value){
$avail_dates[] = $value['availDate'];
}
$startDate = date('Y-m-d');
$endDate = date('Y-m-d', strtotime(date("Y-m-d", strtotime($startDate)) . " +3 week"));
?>
<table>
<?php
foreach ($avail_dates as $availDate){
echo "<tr><td>$availDate</td>";
if (($startDate <= $availDate) && ($endDate >= $availDate)){
echo "<td class='busy'>busy</td>";
}else{
echo "<td>free</td>";
}
echo "</tr>";
}
?>
Instead of printing values, I would add them to the array, and then run a loop on that array, comparing the values to the given start and end dates. I also wouldn't fetch all from the table if you nly need a date.

Answer 5

May be like this?
$date = new DateTime();
$endDate = new DateTime('+3 week');
for($date->format('Y-m-d'); $date->format('Y-m-d') < $endDate->format('Y-m-d'); $date->modify('+1 day')){
$tempDate = $date->format('Y-m-d');
if ($tempDate === $availDate){
echo '<td class="busy">busy</td>';
} else {
echo '<td>free</td>';
}
}