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<?php
header('X-UA-Compatible: IE=edge,chrome=1');
function execute_sql($sql)
{
$result = mysql_query($sql);
if (!$result)
{
$error = mysql_errno() . ' - ' . mysql_error();
echo $error;
throw new Exception($error);
}
return $result;
}
function get_record($sql, $record_not_found_msg = 'Record not found.')
{
$record = array();
$result = execute_sql($sql);
if ($row = mysql_fetch_assoc($result))
{
$record = $row;
mysql_free_result($result);
}
else
{
echo $record_not_found_msg;
throw new Exception($record_not_found_msg);
}
return $record;
}
function &get_records($sql)
{
$result = execute_sql($sql);
$records = array();
while ($row = mysql_fetch_assoc($result))
$records[] = $row;
mysql_free_result($result);
return $records;
}
function save($id, $table, array $save_values, &$action=NULL, array &$model=array())
{
// get table columns
$sql = "SELECT column_name FROM information_schema.columns WHERE table_schema = (SELECT DATABASE()) AND table_name = '$table'";
$tmp_records = get_records($sql);
$columns = array();
foreach ($tmp_records as $tmp_record)
$columns[] = '`' . $tmp_record['column_name'] . '`';
// build save sql
$values = array();
foreach ($save_values as $key => $value)
{
$variable = $key;
$column = '`' . $variable . '`';
$$variable = $value;
$html_variable = 'html_' . $variable;
$$html_variable = htmlspecialchars($$variable, ENT_QUOTES);
$mysql_variable = 'mysql_' . $variable;
$$mysql_variable = empty($$variable) && strlen($$variable) == 0 ? 'NULL' : ("'" . mysql_real_escape_string($$html_variable) . "'");
$model[$variable] = $$html_variable;
if (in_array($column, $columns))
$values[$column] = $$mysql_variable;
}
if (empty($id))
{
// create
if (in_array('`create_on`', $columns))
$values['`create_on`'] = 'NOW()';
$sql = "INSERT INTO `$table` (" . implode(', ', array_keys($values)) . ") VALUES (" . implode(', ', array_values($values)) . ")";
$action = 'Created';
}
else
{
// update
$segments = array();
foreach ($values as $column => $value)
$segments[] = "$column = $value";
$sql = "UPDATE `$table` SET " . implode(', ', $segments) . " WHERE id = $id";
$action = 'Updated';
}
execute_sql($sql);
if (empty($id))
$id = mysql_insert_id();
return $id;
}
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