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Adding the sql_in_set function which should give us a bit of a performance improvement for queries using IN with just one value

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git-svn-id: file:///svn/phpbb/trunk@6261 89ea8834-ac86-4346-8a33-228a782c2dd0
This commit is contained in:
Nils Adermann 2006-08-11 17:43:03 +00:00
parent 7508b00978
commit d8af8223cd
1 changed files with 43 additions and 0 deletions
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43
phpBB/includes/db/dbal.php
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@ -285,6 +285,49 @@ class dbal
return $query; return $query;
} }
function sql_in_set($field, $array)
{
if (!sizeof($array))
{
trigger_error('No values specified for SQL IN comparison', E_USER_ERROR);
}
$bitfield = (strpos($field, 'bitfield') !== false);
$values = array();
foreach ($array as $var)
{
if (is_null($var))
{
$values[] = 'NULL';
}
else if (is_string($var))
{
if (!$bitfield)
{
$values[] = "'" . $this->sql_escape($var) . "'";
}
else
{
$values[] = $this->sql_escape_binary($var);
}
}
else
{
$values[] = (is_bool($var)) ? intval($var) : $var;
}
}
if (sizeof($values) == 1)
{
return $field . ' = ' . $values[0];
}
else
{
return $field . ' IN (' . implode(',', $values) . ')';
}
}
function sql_escape_binary($msg) function sql_escape_binary($msg)
{ {
return "'" . $this->sql_escape($msg) . "'"; return "'" . $this->sql_escape($msg) . "'";