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[SOLVED] debug - unserialize not working


kate_rose

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I have a very long string in a mysql database & I am trying to recall it and unserialize it back into the original array.  Just to be sure I am getting the correct string I echo it.  It says 'Resource id #4'.  When I looked this up it seems that that is what you get if the variable you are trying to echo is an array.  I don't think it should be an array yet since I haven't unserialized it.  The unserialize function isn't creating the array either so I get nothing when I try to look at that with a 'print_r'.  I am sure its something simple since this is the first time I have done this but I don't see it.  I thought perhaps the string was too big but then it wouldn't have fit in the original variable when I serialized it for storage.

 

Here is the code:

 

<?php
include ("functions.php");
connectto_guana_plants ();
$picstorage = array ();
$query = "SELECT serialized FROM serialized_data WHERE title = 'picstorage'";
$result = mysql_query($query) OR die(mysql_error());
echo $result;
$picstorage = unserialize($result);
print_r ($picstorage);
?>

 

I just reran it & I am getting an error which is:

Warning: unserialize() expects parameter 1 to be string, resource given in C:\wamp\www\Guana_Plant_Key\browser.php on line 16

I guess somehow $result is not a string??

 

Thanks,

 

Kate

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try

<?php
include ("functions.php");
connectto_guana_plants ();
$picstorage = array ();
$query = "SELECT serialized FROM serialized_data WHERE title = 'picstorage'";
$result = mysql_query($query) OR die(mysql_error());
$data = mysql_result($result,0);
echo $data;
$picstorage = unserialize($data);
print_r ($picstorage);
?>

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Uhh, you're echoing the MySQL result, not the result set.  That's your problem.  Do what sasa said or do:

 

<?php
include ("functions.php");
connectto_guana_plants ();
$picstorage = array ();
$query = "SELECT serialized FROM serialized_data WHERE title = 'picstorage'";
$result = mysql_query($query) OR die(mysql_error());
$row = mysql_fetch_array($result);
$data = $row['serialized'];
echo $data;
$picstorage = unserialize($data);
print_r ($picstorage);
?>

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Those 2 solutions worked in that I was able to echo the string but I still didn't get the unserialized data loaded into the $picstorage array.

 

Question:  In the manual it looks like mysql_fetch_array is for loading an array directly from mysql into a php array.  So why use it? At that point isn't the variable still a string??  Is that perhaps why the unserialize command is not working, because it is impossible to unserialize a php array and it only works on strings?? 

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When I try to show the array with a while loop instead of the 'print_r' it gives me this error message:

 

Warning: Variable passed to each() is not an array or object in C:\wamp\www\Guana_Plant_Key\browser.php on line 19

 

the code I used has worked before for me but just in case

 

$picstorage = unserialize($data);
while (list ($key, $val) = each ($picstorage)) {
echo "$key -> $val <br>";
}

 

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subfamily FaboideaeStylosanthes_hamata_herb";i:282;s:33:"SurianaceaeSuriana_maritima_herb";i:283;s:33:"MeliaceaeSwietenia_mahogani_herb";i:284;s:34:"MeliaceaeSwietenia_mahogani_herb2";i:285;s:36:"CompositaeSynedrella_nodiflora_herb";i:286;s:42:"CompositaeSynedrella_nodiflora_herb_fruit";i:287;s:39:"BignoniaceaeTabebuia_heterophylla_herb";i:288;s:35:"BignoniaceaeTabebuia_lepidota_herb";i:289;s:43:"ApocynaceaeTabernaemontana_divaricata_herb";i:290;s:36:"PortulaceceaTalinum_fruticosum_herb";i:291;s:61:"Leguminosae subfamily CaesalpinioideaeTamarindus_indica_herb";i:292;s:62:"Leguminosae subfamily CaesalpinioideaeTamarindus_indica_herb2";i:293;s:30:"BignoniaceaeTecoma_stans_herb";i:294;s:54:"Leguminosae subfamily FaboideaeTephrosia_cinerea_herb";i:295;s:57:"Leguminosae subfamily FaboideaeTephrosia_noctiflora_herb";i:296;s:54:"Leguminosae subfamily FaboideaeTeramnus_labialis_herb";i:297;s:36:"CombretaceaeTerminalia_catappa_herb";i:298;s:33:"MalvaceaeThespesia_populnea_herb";i:299;s:35:"EuphorbiaceaeTragia_volubilis_herb";i:300;s:29:"UlmaceaeTrema_micrantha_herb";i:301;s:40:"AizoaceaeTrianthema_portulacastrum_herb";i:302;s:42:"PhytolaccaceaeTrichostigma_octandrum_herb";i:303;s:33:"CompositaeTridax_procumbens_herb";i:304;s:34:"TurneraceaeTurnera_ulmifolia_herb";i:305;s:35:"SterculiaceaeWaltheria_indica_herb";i:306;s:38:"Rutaceaeanthoxylum_martinicense_herb";i:307;s:39:"Rutaceaeanthoxylum_martinicense_herb2";}

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you have error in your serialized string

start of string 'a:306' means array with 308 elements, it's OK

'i:0;s:54:"Leguminosae subfamily FaboideaeAbrus_precatorius_herb";' -> on index 0 is string 54 char long but your string has 53 char, this is error

etc.

 

are you do some operation with serialized string before put it in database

is it any caracter between Faboideae and Abrus in your 1st string?

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Oh - that just means the double backslash . . Duh!

 

Originally I had all the backslashes in the mysql database doubled but then when I loaded it into the php array the doubles where still there.  So I removed them from the db & everything worked fine.  I assumed that meant that I was OK with them even though I had read about using the escape.  Sorry for all the hastle over such a small thing :-[.  I have some errands to run so I will fix it later this eve & mark this solved then.

 

Thanks everyone for all your time.

 

Kate

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