MySQL insert does not work - php

Question

I want to insert data in mysql database.when i am trying to insert my query using PHP MyAdmin then work but if i am tring to insert from my php site from submission the not work some text not insert.
my text
http://www.lexisnexis.com/hottopics/gacode/
§ 16-11-125.1. Definitions
As used in this part, the term:
my form submission insert only this text
http://www.lexisnexis.com/hottopics/gacode/
my query
$test='http://www.lexisnexis.com/hottopics/gacode/
§ 16-11-125.1. Definitions
As used in this part, the term:';
$conn = mysql_connect('localhost', 'test', 'test') or die(mysql_error());
mysql_select_db("test") or die(mysql_error());
mysql_query('SET NAMES utf8');
mysql_query("SET CHARACTER SET utf8");
mysql_query("SET SESSION collation_connection ='utf8_unicode_ci'");
$queryc = "INSERT INTO `table` (data17)values ('".addslashes($test)."')";
mysql_query($queryc) or die(mysql_error());

Answer 1

for the database connection, it should be:
$conn = mysqli_connect('localhost', 'test', 'test') or die(mysqli_error($conn));
for the query, it should be:
mysqli_query($conn, $queryc) or die(mysqli_error($conn);
remember, the mysqli_query's arguments are database connection, query
also, it would be better if the query ($queryc) was:
$queryc = "INSERT INTO `table` (data17)values mysqli_real_escape_string($test))";