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Serialize (PHP)

Posted on 2009-05-12
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Last Modified: 2013-12-12
Following up from Webvogel's excellent advice, I'm now trying to retrieve serialized() data from a MySQL database. The data is being sent to the database row as "a:1:{i:0;s:25:"CompanyName field changed";}" which is great, as I know it works. The problem therein, however, is pulling it back to unserialize it.

Even if I do a simple <?php echo unserialize($row2['Adjustment']); ?> it returns a blank value. Yet, doing an echo $row2['Adjustment'] returns the serialized stuff mentioned above. For everything else, it returns "Array".

I'll attach the code I'm using. Any help would, as always, be much appreciated. I expect I'm doing something really quite simple (as usual). Thanks.
/* snippet */
/* the <div> is basically a mouseover tooltip that is meant to display the unserialized data from the database....hence why I called the variable $tooltip....  ;)  */
 
<?php do { ?>
 
<?php if ($row2['Adjustment'] == "emailed") { echo "emailed"; } else if ($row2['Adjustment'] == "printed") { echo "printed"; } else if ($row2['Adjustment'] == "bookmarked") { echo "bookmarked"; } else if ($row2['LatestModification'] <> "") { echo "<div onMouseover=\"ddrivetip('".$tooltip."', 250)\"; onMouseout=\"hideddrivetip()\">modified</div>"; } ?></td>
<?php } while ($row2 = mysql_fetch_assoc($sql2));
					$tooltip = unserialize($row2['Adjustment']);  # <-- !!!!!! this here !!!!!!!
					$rows = mysql_num_rows($sql2);
					if($rows > 0) {
						mysql_data_seek($sql, 0);
							$row2 = mysql_fetch_assoc($sql2);
					}
			?>
 
<?php } ?>
 
 
 
 
/* and just in case you need to know the Array....here it is. Thanks again for this Webvogel! */
 
<?php 
 
foreach($row as $key => $val){
        if ($row[$key] != $_POST[$map[$key]]){
                $change[] = $key.' field changed';
        }
}
 
$adjustment = serialize($change);
 
?>

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Question by:BenthamLtd
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6 Comments
 
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Expert Comment

by:Beverley Portlock
ID: 24364635
You have a ; at the end of your while loop. Remove it.
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Accepted Solution

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Beverley Portlock earned 250 total points
ID: 24364671
Just to explain - that semicolon forms an empty statement and the while loop executes that statement before moving to the next statement. The interpreter sees it as

while ($row2 = mysql_fetch_assoc($sql2))
     ;

$tooltip = unserialize($row2['Adjustment']);  # <-- !!!!!! this here !!!!!!!
$rows = mysql_num_rows($sql2);
if($rows > 0) {
              mysql_data_seek($sql, 0);
               $row2 = mysql_fetch_assoc($sql2);
}
 
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Author Comment

by:BenthamLtd
ID: 24364758
Parse error: syntax error, unexpected T_VARIABLE, expecting ';' on line 1204


The while loop was working anyway. Any other ideas?
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LVL 34

Expert Comment

by:Beverley Portlock
ID: 24364816
I am not clear whether you are trying to achieve this


while ($row2 = mysql_fetch_assoc($sql2))
     $tooltip = unserialize($row2['Adjustment']);  # <-- !!!!!! this here !!!!!!!


$rows = mysql_num_rows($sql2);

if($rows > 0) {
     mysql_data_seek($sql, 0);
     $row2 = mysql_fetch_assoc($sql2);
}


or this



while ($row2 = mysql_fetch_assoc($sql2)) {
     $tooltip = unserialize($row2['Adjustment']);  # <-- !!!!!! this here !!!!!!!


     $rows = mysql_num_rows($sql2);

     if($rows > 0) {
          mysql_data_seek($sql, 0);
          $row2 = mysql_fetch_assoc($sql2);
     }

}
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Assisted Solution

by:switch7
switch7 earned 250 total points
ID: 24382904
What if you try:
<?php print_r( unserialize($row2['Adjustment']) ); ?>

?
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Author Comment

by:BenthamLtd
ID: 24382930
Whoops sorry, I forgot to update this post. We've solved it now but thank you for all your help guys. Seems we didn't need to use serialize after all. Just implode.

Happy to give a throw a few points around for the useful comments.
<?php
 
// GET VALUES FROM DATABASE TABLE. STORE THEM INTO ARRAY. //
 
$query0 = "SELECT Status, ActioneeID, TypeID, Sales_Ledger_No, ProblemsClass, CompanyName, InvoiceDate, ContactName, AccountManager, Postcode, OrderConfirmedByID, Email, Phone, GoodsToBeReturned_1, GoodsToBeReturned_1_qty, GoodsToBeReturned_2, GoodsToBeReturned_2_qty, GoodsToBeReturned_3, GoodsToBeReturned_3_qty, GoodsToBeReturned_4, GoodsToBeReturned_4_qty, GoodsToBeReturned_5, GoodsToBeReturned_5_qty, GoodsToBeReturned_6, GoodsToBeReturned_6_qty, GoodsToBeReturned_7, GoodsToBeReturned_7_qty, GoodsToBeReturned_8, GoodsToBeReturned_8_qty, GoodsToBeReturned_9, GoodsToBeReturned_9_qty, GoodsToBeReturned_10, GoodsToBeReturned_10_qty, GoodsToBeReturned_11, GoodsToBeReturned_11_qty, GoodsToBeReturned_12, GoodsToBeReturned_12_qty from vedit_sheet WHERE Sheet_No='$sheet'";
$sql0 = mysql_query($query0) or die(mysql_error());
$row0 = mysql_fetch_assoc($sql0);
$rows0 = mysql_num_rows($sql0);
 
# FORMAT: a<form> = hidden form for array lookup (drop down boxes). f<form> = original form name from sheet (text fields).
$map = array('Status' => 'aStatus', 'Actionee' => 'aActionee', 'Type' => 'aType', 'Sales_Ledger_No' => 'fSalesRef', 'ProblemsClass' => 'aProblems', 'CompanyName' => 'fCompany', 'InvoiceDate' => 'fInvoice', 'ContactName' => 'fContact', 'AccountManager' => 'aAccountMan', 'Postcode' => 'fPostcode', 'OrderConfirmedByID' => 'fConfirmedBy', 'Email' => 'fEmail', 'Phone' => 'fPhone');  // map array: name of database field = name of form field
 
foreach($row0 as $key => $val){
        if ($row0[$key] != $_POST[$map[$key]]){
                $array[] = $key.' field changed from '.$val.' ' ;
       	    }
}
 
$comma_sep = implode("<br>",$array);
 
$update_sheet_history = "INSERT INTO sheet_history (Sheet_No, UserID, LatestModification, Adjustment) VALUES ('$sheet', '$_SESSION[userID]', now(), '$comma_sep') "; 

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