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Cosmetic changes.

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- make it easier to understand query construction.
This commit is contained in:
Jean Paul Galea 2015-08-18 12:03:58 +02:00
parent 0c3a48ee63
commit b76ffc313f
1 changed files with 72 additions and 53 deletions
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125
ykval-db-pdo.php
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@ -126,60 +126,79 @@ class DbImpl extends Db
if($result) $result->closeCursor();
}
/**
* main function used to get rows by multiple key=>value pairs from Db table.
*
* @param string $table Database table to update row in
* @param array $where Array with column=>values to select rows by
* @param int $nr Number of rows to collect. NULL=>inifinity. Default=NULL.
* @param int $rev rev=1 indicates order should be reversed. Default=NULL.
* @param string distinct Select rows with distinct columns, Default=NULL
* @return mixed Array with values from Db row or 2d-array with multiple rows
*
*/
public function findByMultiple($table, $where, $nr=null, $rev=null, $distinct=null)
{
$value=""; /* quiet the PHP Notice */
$match=null; /* quiet the PHP Notice */
$query="SELECT";
if ($distinct!=null) {
$query.= " DISTINCT " . $distinct;
} else {
$query.= " *";
}
$query.= " FROM " . $table;
if ($where!=null){
foreach ($where as $key=>$value) {
if ($key!=null) {
if ($value!=null) $match.= " ". $key . " = '" . $value . "' and";
else $match.= " ". $key . " is NULL and";
/**
* Main function used to get rows by multiple key=>value pairs from Db table.
*
* @param string $table Database table to update row in
* @param array $where Array with column=>values to select rows by
* @param int $nr Number of rows to collect. NULL=>inifinity. Default=NULL.
* @param int $rev rev=1 indicates order should be reversed. Default=NULL.
* @param string distinct Select rows with distinct columns, Default=NULL
*
* @return mixed Array with values from Db row or 2d-array with multiple rows
*/
public function findByMultiple($table, $where, $nr=NULL, $rev=NULL, $distinct=NULL)
{
$value = '';
$match = NULL;
$query = 'SELECT';
if ($distinct != NULL)
$query.= " DISTINCT " . $distinct;
else
$query.= " *";
$query.= " FROM " . $table;
if ($where != NULL)
{
foreach ($where as $key => $value)
{
if ($key != NULL)
{
if ($value != NULL)
$match .= " ". $key . " = '" . $value . "' and";
else
$match .= " ". $key . " is NULL and";
}
}
if ($match != NULL)
$query .= " WHERE" . $match;
$query = rtrim($query, "and");
$query = rtrim($query);
}
if ($rev == 1)
$query.= " ORDER BY id DESC";
if ($nr != NULL)
$query.= " LIMIT " . $nr;
$result = $this->query($query, true);
if (!$result)
return false;
if ($nr == 1)
{
$row = $this->fetchArray($result);
$this->closeCursor($result);
return $row;
}
else
{
$collection = array();
while($row = $this->fetchArray($result))
$collection[] = $row;
$this->closeCursor($result);
return $collection;
}
}
}
if ($match!=null) $query .= " WHERE" . $match;
$query=rtrim($query, "and");
$query=rtrim($query);
}
if ($rev==1) $query.= " ORDER BY id DESC";
if ($nr!=null) $query.= " LIMIT " . $nr;
$result = $this->query($query, true);
if (!$result) return false;
if ($nr==1) {
$row = $this->fetchArray($result);
$this->closeCursor($result);
return $row;
}
else {
$collection=array();
while($row = $this->fetchArray($result)){
$collection[]=$row;
}
$this->closeCursor($result);
return $collection;
}
}
/**
* main function used to delete rows by multiple key=>value pairs from Db table.