I`m trying to figure out how to create sql query to DB, that will doing the next: Count the number of domains, that exists in my PHP array, but not exist in DB table. Table structure is:
id|domain
I have an array with the number of domains
$domains = ("domain1", "domain2"....);
Please, help me deal with this!
Thanks!!
Where's the problem?
In pseudo-code:
=> foreach entry in phpArray
=> select entry from db
=> if(result == false) counter++
Its general coding. Im sure you can work out this way.
$query = "SELECT COUNT(*) FROM DOMAINS WHERE DOMAINS.DOMAIN NOT IN (" . implode(', ', $domains) . ")";
希望能帮助到你 :)
First you count your array with:
$counted = count($domains);
then the query is:
SELECT COUNT(domain) as counted_domains FROM table
then compare the results and you get your difference :)
Is this helpful?
$query = "SELECT count(*) FROM table WHERE domains NOT IN ('" . join("', '", $domains) . "')";
With mysql:
SELECT t1.domain
FROM yourtable t1
LEFT JOIN yourtable t2
ON t1.id = t2.id
WHERE NOT t2.domain IN ('domain1', 'domain2'...)
Select all domains from the database Store these in an array $dbdomains
do something like
foreach($domains as $key->$domain) {
if in_array($domain, $dbdomains) unset $domains[$key];
}
echo count($domains);
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