php - Database Error. SQL query is not being executed -


i have form takes 2 values input , parses them using post method next file have piece of code. should save 2 values in mysql database. strangely doesn't .. , in output error this: 0: 0:

$service_name = $_post['service_name']; $service_price = $_post['service_price'];  $link = mysql_connect("localhost", "db_user", "pa$$");  mysql_select_db("database", $link); echo mysql_errno($link) . ": " . mysql_error($link). "\n";  mysql_select_db("database", $link); mysql_query("insert service_tbl(id_service, service_name, service_price) values(null,'$service_name','$service_price')", $link); echo mysql_errno($link) . ": " . mysql_error($link) . "\n";

in database table service_tbl, id_serviceis auto_increment , other 2 columns varchar. doing wrong here?

you trying insert null in auto increment column, wich not possible, change 

mysql_query("insert service_tbl( service_name, service_price)     values('$service_name','$service_price')", $link);

then remember mysql_ functions deprecated advise switch mysqli or pdo , indeed @ risk of sql injection, have here how can prevent sql injection in php?. should use prepared statment avoid risk


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