PHP PDO simple insert or update function - php

Question

In trying to create a simple PHP PDO update function that if the field is not found would insert it, I created this little snippet.
function updateorcreate($table,$name,$value){
global $sodb;
$pro = $sodb->prepare("UPDATE `$table` SET value = :value WHERE field = :name");
if(!$pro){
$pro = $sodb->prepare("INSERT INTO `$table` (field,value) VALUES (:name,:value)");
}
$pro->execute(array(':name'=>$name,':value'=>$value));
}
It does not detect though if the update function is going to work with if(!$pro); How would we make this one work.

Answer 1

You are assigning $pro to the prepare, not the execute statement.
Having said that, if you are using mysql you can use the insert... on duplicate key update syntax.
insert into $table (field, value) values (:name, :value) on duplicate key update value=:value2
You can't use the same bound param twice, but you can set two bound params to the same value.
Edit: This mysql syntax will only work where a key (primary or another unique) is present and would cause an insert to fail.

Answer 2

If it's mysql-only you could try INSERT INTO ... ON DUPLICATE KEY UPDATE
http://dev.mysql.com/doc/refman/5.0/en/insert-on-duplicate.html

Answer 3

You will first need to execute it.
Apart from that, this is a dodgy way of doing this. It would be better to start a transaction, do a SELECT and then determine what to do (INSERT or UPDATE). Just checking whether the UPDATE query succeeded doesn't suffice, it succeeds when no row is found too.

Answer 4

try,
PDO::exec()
returns 1 if inserted.
2 if the row has been updated.
for prepared statements,
PDOStatement::execute()
You can try,
PDOStement::rowCount()

Answer 5

The following are PHP PDO helper functions for INSERT and UPDATE
INSERT function:
function basicInsertQuery($tableName,$values = array()){
/*
//
USAGE INSERT FUNCTİON
$values = [
"column" => $value,
];
$result = basicInsertQuery("bulk_operations",$values);
*/
try {
global $pdo;
foreach ($values as $field => $v)
$vals[] = ':' . $field;
$ins = implode(',', $vals);
$fields = implode(',', array_keys($values));
$sql = "INSERT INTO $tableName ($fields) VALUES ($vals)";
$rows = $pdo->prepare($sql);
foreach ($values as $k => $vl)
{
$rows->bindValue(':' . $k, $l);
}
$result = $rows->execute();
return $result;
} catch (\Throwable $th) {
return $th;
}
}
UPDATE function:
function basicUpdateQuery($tableName, $values = array(), $where = array()) {
/*
*USAGE UPDATE FUNCTİON
$valueArr = [ column => "value", ];
$whereArr = [ column => "value", ];
$result = basicUpdateQuery("bulk_operations",$valueArr, $whereArr);
*/
try {
global $pdo;
//set value
foreach ($values as $field => $v)
$ins[] = $field. '= :' . $field;
$ins = implode(',', $ins);
//where value
foreach ($where as $fieldw => $vw)
$inswhere[] = $fieldw. '= :' . $fieldw;
$inswhere = implode(' && ', $inswhere);
$sql = "UPDATE $tableName SET $ins WHERE $inswhere";
$rows = $pdo->prepare($sql);
foreach ($values as $f => $v){
$rows->bindValue(':' . $f, $v);
}
foreach ($where as $k => $l){
$rows->bindValue(':' . $k, $l);
}
$result = $rows->execute();
return $result;
} catch (\Throwable $th) {
return $th;
}
}