Why does php $result from mysql_query() have bool-type but no value? Won't INSERT to mysql -


i have simple php script adds value $_get['lightstate'] mysql db.

connection database successful, , error-handling sql statement doesn't show problem.

since sql statement of "insert" type, expect boolean in response per http://www.php.net/mysql_query

for other type of sql statements, insert, update, delete, drop, etc, mysql_query() returns true on success or false on error.

when open php live session, can see $result has bool-type, no value.

i had been able query post db once, have no been able replicate result...

here's code as-is...thanks in advance.

<?php # setup connection info   $servername = "localhost";   $username = [username];   $password = [password];   $dbname = "esp8266";  # set data table , connect db   $lightstate = $_get['lightstate'];   $conn = mysql_connect($servername, $username, $password);  # check connection , abort if not connected   if(!$conn)   {     die('could not connect: ' . mysql_error());   }  # write data db (date , lightstate table, lightstatus)   $datenow = date('y-m-d');   $sql = sprintf("insert lightstatus (logdate,lightstate) values ('%s',$lightstate)", mysql_real_escape_string($datenow));   echo $sql, "\n";           //just check statement correct   $result = mysql_query($sql);   if(!result) {     die('invalid query: ' . mysql_error());   }    # let me know posted data & close db   echo "<h1>the data has been sent!</h1>\n";   mysql_close($conn); ?>

edit: when run php live session, i'm running on local machine (raspi running lamp-server).


Comments

Post a Comment

Popular posts from this blog

python - Operations inside variables -

this question has answer here: evaluating mathematical expression in string 12 answers i want make python script finds maximum possible output using 2 operations. problem says there syntax error @ 2nd last line, in b in there. how can fix it? x = 0 = int(input("1st number:")) c = int(input("2nd number:" )) e = int(input("3rd number:" )) in range(4): if == 0: b = "+" elif == 1: b = "-" elif == 2: b = "/" else: b = "*" j in range(4): if j == 0: d = "+" elif j == 1: d = "-" elif j == 2: d = "/" else: d = "*" k = b c d e print(k) if you're after variables e on single line, couldn...
Read more

Generic Map Parameter java -

i having lot of methods of type: public static list<eduusers> getdetails(class c, map<string, integer> params) { list<eduusers> details = null; session session = hibernateutil.getsessionfactory().opensession(); transaction tx = null; try { tx = session.begintransaction(); criteria cr = session.createcriteria(c); (map.entry<string, integer> entry : params.entryset()) { cr.add(restrictions.eq(entry.getkey(), entry.getvalue())); } details = cr.list(); tx.commit(); } catch (exception asd) { log.debug(asd.getmessage()); if (tx != null) { tx.commit(); } } { session.close(); } return details; } i trying have generic method them , have written far: public static <t> list<t> getdetails(class<t> c, class<t> b) { l...
Read more

arrays - What causes a java.lang.ArrayIndexOutOfBoundsException and how do I prevent it? -

what arrayindexoutofboundsexception mean , how rid of it? here code sample triggers exception: string[] name = {"tom", "dick", "harry"}; for(int = 0; i<=name.length; i++) { system.out.print(name[i] +'\n'); } your first port of call should documentation explains reasonably clearly: thrown indicate array has been accessed illegal index. index either negative or greater or equal size of array. so example: int[] array = new int[5]; int boom = array[10]; // throws exception as how avoid it... um, don't that. careful array indexes. one problem people run thinking arrays 1-indexed, e.g. int[] array = new int[5]; // ... populate array here ... (int index = 1; index <= array.length; index++) { system.out.println(array[index]); } that miss out first element (index 0) , throw exception when index 5. valid indexes here 0-4 inclusive. correct, idiomatic for statement here be: for (int index = 0; index <...
Read more