mysql use CASE to update multiple rows with a for loop -

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i need update 360 rows. doesn't work properly. help, please

for ($i = 1; $i <= 360; $i++) {    $info  = mysql_real_escape_string($_post[$i]);   $check = mysql_real_escape_string($_post[''.$i.'check']);        $case = "when '$i' '$info'"; }    $sql = "update $table             set info = case id               $case             end            id in (1-360)";    mysql_query($sql)       or die (mysql_error());

there's @ least 1 (not very?) obvious reason why doesn't work - you're replacing contents of $case every iteration of loop. $case .= "when '$i' '$info'\n"; (note dot before equal sign) might further. 1 $i put in single quotes inside query while id columns tend numeric.

i didn't try , run code. if still "doesn't work", should edit question , add more info table structure , error messages.

apart that, do:

$sql = "update $table  set\n"; ($i = 1; $i <= 360; $i++) {    $info  = mysql_real_escape_string($_post[$i]);   //$check = mysql_real_escape_string($_post[''.$i.'check']);   // what's $check for?    $sql .= "info = '$info' id = $i\n"; }  mysql_query($sql)   or die (mysql_error());

running batch of statements against server not uncommon , might yield better performance looking matching value in 360 line case construct.


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