Table A
id | name | important |
-----------------------
1 Abe 0
2 Ann 1
3 John 1
4 Bill 0
I have a php array of id values
$ids = [1, 4];
I want update table A setting important column equals 1 if id column value is in $ids array AND setting important column value equals 0 if not.
So for the example, the table after update would be:
id | name | important |
-----------------------
1 Abe 1
2 Ann 0
3 John 0
4 Bill 1
How to do?
Thanks for any help!
First make array safe before insert
$ids = array_map('intval', $ids);
Then insert with one query
<?php
"UPDATE TableA SET important=1 WHERE id in(" . implode(',',$ids) . ");"
Basically you need to run next query:
UPDATE TableA SET important = (id IN (1,4));
Below php implementation of this:
<?php
$ids = [1,4];
//prepare SQL statement with plaseholders
$placeholder = implode(',', array_pad([], count($ids) , '?'));
$sql = "UPDATE TableA SET important = (id IN ($placeholder));";
// run update with ids
$pdo->prepare($sql)->execute($ids);
// Get updated data for check result
$sth = $pdo->prepare("SELECT * FROM TableA");
$sth->execute();
print_r($sth->fetchAll());
And here you can test the code.
i am update id value using php pdo
. and its work successfully.
first i can try given id value update in 1. and then after try to all ids value update in 0.
so please try this code.
<?php
//This is a database connection
$host_name = 'localhost';
$db_name = 'stackoverflow';
$user_name = 'root';
$password = '';
$conn = new PDO("mysql:host=$host_name; dbname=$db_name;", $user_name, $password);
$ids = [1, 4]; //This is a id for update value is 1
$sqlforOneVal = "UPDATE important SET important = 1 WHERE id in (".(implode(', ', $ids)).")";
$updateforOne = $conn->prepare($sqlforOneVal);
$updateforOne->execute();
$sqlforZeroVal = "UPDATE important SET important = 0 WHERE id not in (".(implode(', ', $ids)).")";
$updateforZero = $conn->prepare($sqlforZeroVal);
$updateforZero->execute();
?>
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