PHP MYSQL long query fails in php but works in mysql - php

Question

ok so I have written some code that is doing a backup of configuration items. This script runs fine for everything else, but fails when it gets to this long query for this specific configuration item.
for sanity purposes I am just going to include the code for this section.
function writepool($pool, $device){
$pooltext = implode('', $pool['list']);
$sql = "INSERT into pools (deviceid, name, config) VALUES (
'".$device."',
'".$pool['pool']."',
'".addslashes($pooltext)."'
)";
echo $sql;
$addpool = insertdb($sql);
}
function insertdb($sql){
include('/var/www/db_login.php');
$conn = new mysqli($db_host, $db_username, $db_password, "F5");
// check connection
if ($conn->connect_error) {
trigger_error('Database connection failed: ' . $conn->connect_error, E_USER_ERROR);
}
if($conn->query($sql) === false) {
trigger_error('Wrong SQL: ' . $sql . ' Error: ' . $conn->error, E_USER_ERROR);
} else {
$last_inserted_id = $conn->insert_id;
$affected_rows = $conn->affected_rows;
}
$result["lastid"] = $last_inserted_id;
$result["affectedrow"] = $affected_rows;
return $result;
$conn->close();
}
The error message I get is as follows
Fatal error: Wrong SQL: INSERT into pools (deviceid, name, config) VALUES ( '71', 'shopping.a.prod_pool_53601', 'ltm pool /Common/shopping.a.prod_pool_53601 { load-balancing-mode weighted-least-connections-node members { /Common/10.216.26.55:53601 { address 10.216.26.55 priority-group 1 } /Common/10.216.26.57:53601 { address 10.216.26.57 priority-group 1 } /Common/10.216.26.58:53601 { address 10.216.26.58 priority-group 1 } /Common/10.216.26.59:53601 { address 10.216.26.59 priority-group 1 } /Common/10.216.26.60:53601 { address 10.216.26.60 priority-group 1 } /Common/10.216.26.61:53601 { address 10.216.26.61 priority-group 1 } /Common/10.216.26.62:53601 { address 10.216.26.62 priority-group 1 } /Common/10.216.26.66:53601 { in /var/www/html/functions.php on line 2286
Note the query is extremely long. This particular configuration item is huge. I am storing this inside a BLOB in MYSQL.
If I echo the $sql variable I can see my entire query string. The query is too long to place here.
'If I copy the query string to MYSQL it works.
Also if I copy the query string from my echo. and use a test page and put $sql= to the string echo'd by my failed script. it works. I wish I could post the query but it is too long due to blob data.
****** UPDATE *********
I did what tadman suggested, I moved to a prepared statement. However, now I am not getting any data input into the blob in my table.
function writepool($pool, $device){
$pooltext = implode('', $pool['list']);
/*
$sql = "INSERT into pools (deviceid, name, config) VALUES (
'".$device."',
'".$pool['pool']."',
'".addslashes($pooltext)."'
)";
*/
#$addpool = insertdb($sql);
include('/var/www/db_login.php');
$mysqli = new mysqli($db_host, $db_username, $db_password, "F5");
// Check connection
if($mysqli === false){
die("ERROR: Could not connect. " . $mysqli->connect_error);
}
// Prepare an insert statement
$sql = "INSERT into pools (deviceid, name, config) VALUES (?, ?, ?)";
if($stmt = $mysqli->prepare($sql)){
// Bind variables to the prepared statement as parameters
$stmt->bind_param("ssb", $db_device, $db_pool, $db_text);
// Set parameters
$db_device = $device;
$db_pool = $pool['pool'];
$db_text = addslashes($pooltext);
// Attempt to execute the prepared statement
if($stmt->execute()){
#echo "Records inserted successfully.";
} else{
echo "ERROR: Could not execute query: $sql. " . $mysqli->error;
}
} else{
echo "ERROR: Could not prepare query: $sql. " . $mysqli->error;
}
// Close statement
$stmt->close();
// Close connection
$mysqli->close();
}
$db_text is a section of configuration data generated by a system file. I was storing this as a blob since it is huge (1600+ lines long).