1049 lines
22 KiB
PHP
1049 lines
22 KiB
PHP
<?php
|
|
/**
|
|
* Query
|
|
*
|
|
* Free Query Builder / Database Abstraction Layer
|
|
*
|
|
* @author Timothy J. Warren
|
|
* @copyright Copyright (c) 2012
|
|
* @link https://github.com/aviat4ion/Query
|
|
* @license http://philsturgeon.co.uk/code/dbad-license
|
|
*/
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Convienience class for creating sql queries - also the class that
|
|
* instantiates the specific db driver
|
|
*/
|
|
class Query_Builder {
|
|
|
|
// Compiled query component strings
|
|
private $select_string,
|
|
$from_string,
|
|
$insert_string,
|
|
$update_string,
|
|
$set_string,
|
|
$order_string,
|
|
$group_string;
|
|
|
|
// Key value pairs
|
|
private $set_array,
|
|
$set_array_keys,
|
|
$order_array,
|
|
$group_array;
|
|
|
|
// Values to apply to prepared statements
|
|
private $values;
|
|
|
|
// Query-global components
|
|
private $limit,
|
|
$offset;
|
|
|
|
// Alias to $this->db->sql
|
|
private $sql;
|
|
|
|
// Query component order mapping
|
|
// for complex select queries
|
|
//
|
|
// Format:
|
|
//
|
|
// array(
|
|
// 'type' => 'where',
|
|
// 'conjunction' => ' AND ',
|
|
// 'string' => 'k=?'
|
|
// )
|
|
private $query_map;
|
|
|
|
/**
|
|
* Constructor
|
|
*
|
|
* @param object $conn_name - the name of the connection/parameters
|
|
*/
|
|
public function __construct($params)
|
|
{
|
|
$params->type = strtolower($params->type);
|
|
$dbtype = ($params->type !== 'postgresql') ? $params->type : 'pgsql';
|
|
|
|
// Initiate the constructor for the selected database
|
|
switch($dbtype)
|
|
{
|
|
default:
|
|
$this->db = new $dbtype("host={$params->host};port={$params->port};", $params->user, $params->pass);
|
|
break;
|
|
|
|
case "sqlite":
|
|
if ( ! empty($params->user) && ! empty($params->pass))
|
|
{
|
|
$this->db = new $dbtype($params->file, $params->user, $params->pass);
|
|
}
|
|
else
|
|
{
|
|
$this->db = new $dbtype($params->file);
|
|
}
|
|
break;
|
|
|
|
case "firebird":
|
|
$this->db = new $dbtype("{$params->host}:{$params->file}", $params->user, $params->pass);
|
|
break;
|
|
}
|
|
|
|
// Make things just slightly shorter
|
|
$this->sql =& $this->db->sql;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// ! Select Queries
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Specifies rows to select in a query
|
|
*
|
|
* @param string $fields
|
|
* @return $this
|
|
*/
|
|
public function select($fields)
|
|
{
|
|
// Split fields by comma
|
|
$fields_array = explode(",", $fields);
|
|
$fields_array = array_map('trim', $fields_array);
|
|
|
|
// Split on 'As'
|
|
foreach ($fields_array as $key => $field)
|
|
{
|
|
if (stripos($field, 'as') !== FALSE)
|
|
{
|
|
$fields_array[$key] = preg_split('`as`i', $field);
|
|
$fields_array[$key] = array_map('trim', $fields_array[$key]);
|
|
}
|
|
}
|
|
|
|
// Quote the identifiers
|
|
$safe_array = array_map(array($this->db, 'quote_ident'), $fields_array);
|
|
|
|
unset($fields_array);
|
|
|
|
// Join the strings back together
|
|
for($i = 0, $c = count($safe_array); $i < $c; $i++)
|
|
{
|
|
if (is_array($safe_array[$i]))
|
|
{
|
|
$safe_array[$i] = implode(' AS ', $safe_array[$i]);
|
|
}
|
|
}
|
|
|
|
$this->select_string = implode(', ', $safe_array);
|
|
|
|
unset($safe_array);
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Specify the database table to select from
|
|
*
|
|
* @param string $dbname
|
|
* @return $this
|
|
*/
|
|
public function from($dbname)
|
|
{
|
|
// Split identifiers on spaces
|
|
$ident_array = explode(' ', trim($dbname));
|
|
$ident_array = array_map('trim', $ident_array);
|
|
|
|
// Quote the identifiers
|
|
$ident_array = array_map(array($this->db, 'quote_ident'), $ident_array);
|
|
|
|
// Paste it back together
|
|
$this->from_string = implode(' ', $ident_array);
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// ! 'Like' methods
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Creates a Like clause in the sql statement
|
|
*
|
|
* @param string $field
|
|
* @param mixed $val
|
|
* @param string $pos
|
|
* @return $this
|
|
*/
|
|
public function like($field, $val, $pos='both')
|
|
{
|
|
$field = $this->db->quote_ident($field);
|
|
|
|
// Add the like string into the order map
|
|
$l = $field. ' LIKE ?';
|
|
|
|
if ($pos == 'before')
|
|
{
|
|
$val = "%{$val}";
|
|
}
|
|
elseif ($pos == 'after')
|
|
{
|
|
$val = "{$val}%";
|
|
}
|
|
else
|
|
{
|
|
$val = "%{$val}%";
|
|
}
|
|
|
|
$this->query_map[] = array(
|
|
'type' => 'like',
|
|
'conjunction' => (empty($this->query_map)) ? 'WHERE ' : ' AND ',
|
|
'string' => $l
|
|
);
|
|
|
|
// Add to the values array
|
|
$this->values[] = $val;
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Generates an OR Like clause
|
|
*
|
|
* @param string $field
|
|
* @param mixed $val
|
|
* @param string $pos
|
|
* @return $this
|
|
*/
|
|
public function or_like($field, $val, $pos='both')
|
|
{
|
|
$field = $this->db->quote_ident($field);
|
|
|
|
// Add the like string into the order map
|
|
$l = $field. ' LIKE ?';
|
|
|
|
if ($pos == 'before')
|
|
{
|
|
$val = "%{$val}";
|
|
}
|
|
elseif ($pos == 'after')
|
|
{
|
|
$val = "{$val}%";
|
|
}
|
|
else
|
|
{
|
|
$val = "%{$val}%";
|
|
}
|
|
|
|
$this->query_map[] = array(
|
|
'type' => 'like',
|
|
'conjunction' => (empty($this->query_map)) ? 'WHERE ' : ' OR ',
|
|
'string' => $l
|
|
);
|
|
|
|
// Add to the values array
|
|
$this->values[] = $val;
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Generates a NOT LIKE clause
|
|
*
|
|
* @param string $field
|
|
* @param mixed $val
|
|
* @param string $pos
|
|
* @return $this
|
|
*/
|
|
public function not_like($field, $val, $pos='both')
|
|
{
|
|
$field = $this->db->quote_ident($field);
|
|
|
|
// Add the like string into the order map
|
|
$l = $field. ' NOT LIKE ?';
|
|
|
|
if ($pos == 'before')
|
|
{
|
|
$val = "%{$val}";
|
|
}
|
|
elseif ($pos == 'after')
|
|
{
|
|
$val = "{$val}%";
|
|
}
|
|
else
|
|
{
|
|
$val = "%{$val}%";
|
|
}
|
|
|
|
$this->query_map[] = array(
|
|
'type' => 'like',
|
|
'conjunction' => (empty($this->query_map)) ? ' WHERE ' : ' AND ',
|
|
'string' => $l
|
|
);
|
|
|
|
// Add to the values array
|
|
$this->values[] = $val;
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Generates a OR NOT LIKE clause
|
|
*
|
|
* @param string $field
|
|
* @param mixed $val
|
|
* @param string $pos
|
|
* @return $this;
|
|
*/
|
|
public function or_not_like($field, $val, $pos='both')
|
|
{
|
|
$field = $this->db->quote_ident($field);
|
|
|
|
// Add the like string into the order map
|
|
$l = $field. ' NOT LIKE ?';
|
|
|
|
if ($pos == 'before')
|
|
{
|
|
$val = "%{$val}";
|
|
}
|
|
elseif ($pos == 'after')
|
|
{
|
|
$val = "{$val}%";
|
|
}
|
|
else
|
|
{
|
|
$val = "%{$val}%";
|
|
}
|
|
|
|
$this->query_map[] = array(
|
|
'type' => 'like',
|
|
'conjunction' => (empty($this->query_map)) ? ' WHERE ' : ' OR ',
|
|
'string' => $l
|
|
);
|
|
|
|
// Add to the values array
|
|
$this->values[] = $val;
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// ! 'Where' methods
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Do all the repeditive stuff for where type methods
|
|
*
|
|
* @param mixed $key
|
|
* @param mixed $val
|
|
* @return array
|
|
*/
|
|
private function _where($key, $val=array())
|
|
{
|
|
$where = array();
|
|
|
|
// Key and value passed? Add them to the where array
|
|
if (is_scalar($key) && is_scalar($val))
|
|
{
|
|
$where[$key] = $val;
|
|
$this->values[] = $val;
|
|
}
|
|
// Array or object, loop through and add to the where array
|
|
elseif ( ! is_scalar($key))
|
|
{
|
|
foreach($key as $k => $v)
|
|
{
|
|
$where[$k] = $v;
|
|
$this->values[] = $v;
|
|
}
|
|
}
|
|
|
|
return $where;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Specify condition(s) in the where clause of a query
|
|
* Note: this function works with key / value, or a
|
|
* passed array with key / value pairs
|
|
*
|
|
* @param mixed $key
|
|
* @param mixed $val
|
|
* @return $this
|
|
*/
|
|
public function where($key, $val=array())
|
|
{
|
|
$where = $this->_where($key, $val);
|
|
|
|
// Create key/value placeholders
|
|
foreach($where as $f => $val)
|
|
{
|
|
// Split each key by spaces, in case there
|
|
// is an operator such as >, <, !=, etc.
|
|
$f_array = explode(' ', trim($f));
|
|
|
|
$item = $this->db->quote_ident($f_array[0]);
|
|
|
|
// Simple key value, or an operator
|
|
$item .= (count($f_array === 1)) ? '= ?' : " {$f_array[1]} ?";
|
|
|
|
// Put in the query map for select statements
|
|
$this->query_map[] = array(
|
|
'type' => 'where',
|
|
'conjunction' => ( ! empty($this->query_map)) ? ' AND ' : ' WHERE ',
|
|
'string' => $item
|
|
);
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Where clause prefixed with "OR"
|
|
*
|
|
* @param string $field
|
|
* @param mixed $val
|
|
* @return $this
|
|
*/
|
|
public function or_where($field, $val=array())
|
|
{
|
|
$where = $this->_where($field, $val);
|
|
|
|
// Create key/value placeholders
|
|
foreach($where as $f => $val)
|
|
{
|
|
// Split each key by spaces, incase there
|
|
// is an operator such as >, <, !=, etc.
|
|
$f_array = explode(' ', trim($f));
|
|
|
|
// Simple key = val
|
|
if (count($f_array) === 1)
|
|
{
|
|
$item = $this->db->quote_ident($f_array[0]) . '= ?';
|
|
}
|
|
else // Other operators
|
|
{
|
|
$item = $this->db->quote_ident($f_array[0]) . " {$f_array[1]} ?";
|
|
}
|
|
|
|
// Put in the query map for select statements
|
|
$this->query_map[] = array(
|
|
'type' => 'where',
|
|
'conjunction' => ( ! empty($this->query_map)) ? ' OR ' : ' WHERE ',
|
|
'string' => $item
|
|
);
|
|
}
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Where clause with 'IN' statement
|
|
*
|
|
* @param mixed $field
|
|
* @param mixed $val
|
|
* @return $this
|
|
*/
|
|
public function where_in($field, $val=array())
|
|
{
|
|
$field = $this->db->quote_ident($field);
|
|
$params = array_fill(0, count($val), '?');
|
|
|
|
foreach($val as $v)
|
|
{
|
|
$this->values[] = $v;
|
|
}
|
|
|
|
$string = $field . ' IN ('.implode(',', $params).') ';
|
|
|
|
$this->query_map[] = array(
|
|
'type' => 'where_in',
|
|
'conjunction' => ( ! empty($this->query_map)) ? ' AND ' : ' WHERE ',
|
|
'string' => $string
|
|
);
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Where in statement prefixed with "or"
|
|
*
|
|
* @param string $field
|
|
* @param mixed $val
|
|
* @return $this
|
|
*/
|
|
public function or_where_in($field, $val=array())
|
|
{
|
|
$field = $this->db->quote_ident($field);
|
|
$params = array_fill(0, count($val), '?');
|
|
|
|
foreach($val as $v)
|
|
{
|
|
$this->values[] = $v;
|
|
}
|
|
|
|
$string = $field . ' IN ('.implode(',', $params).') ';
|
|
|
|
$this->query_map[] = array(
|
|
'type' => 'where_in',
|
|
'conjunction' => ( ! empty($this->query_map)) ? ' OR ' : ' WHERE ',
|
|
'string' => $string
|
|
);
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* WHERE NOT IN (FOO) clause
|
|
*
|
|
* @param string $field
|
|
* @param mixed $val
|
|
* @return $this
|
|
*/
|
|
public function where_not_in($field, $val=array())
|
|
{
|
|
$field = $this->db->quote_ident($field);
|
|
$params = array_fill(0, count($val), '?');
|
|
|
|
foreach($val as $v)
|
|
{
|
|
$this->values[] = $v;
|
|
}
|
|
|
|
$string = $field.' NOT IN ('.implode(',', $params).') ';
|
|
|
|
$this->query_map[] = array(
|
|
'type' => 'where_in',
|
|
'conjunction' => ( ! empty($this->query_map)) ? ' AND ' : ' WHERE ',
|
|
'string' => $string
|
|
);
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* OR WHERE NOT IN (FOO) clause
|
|
*
|
|
* @param string $field
|
|
* @param mixed $val
|
|
* @return $this
|
|
*/
|
|
public function or_where_not_in($field, $val=array())
|
|
{
|
|
$field = $this->db->quote_ident($field);
|
|
$params = array_fill(0, count($val), '?');
|
|
|
|
foreach($val as $v)
|
|
{
|
|
$this->values[] = $v;
|
|
}
|
|
|
|
$string = $field.' NOT IN ('.implode(',', $params).') ';
|
|
|
|
$this->query_map[] = array(
|
|
'type' => 'where_in',
|
|
'conjunction' => ( ! empty($this->query_map)) ? ' OR ' : ' WHERE ',
|
|
'string' => $string
|
|
);
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// ! Other Query Modifier methods
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Creates a join phrase in a compiled query
|
|
*
|
|
* @param string $table
|
|
* @param string $condition
|
|
* @param string $type
|
|
* @return $this
|
|
*/
|
|
public function join($table, $condition, $type='')
|
|
{
|
|
// Paste it back together
|
|
$table = implode(" ", array_map(array($this->db, 'quote_ident'), explode(' ', trim($table))));
|
|
//$condition = preg_replace('`(\W)`', " $1 ", $condition);
|
|
$cond_array = explode(' ', trim($condition));
|
|
$cond_array = array_map('trim', $cond_array);
|
|
|
|
$condition = $table . ' ON ' . $this->db->quote_ident($cond_array[0]) . $cond_array[1] .
|
|
' ' . $this->db->quote_ident($cond_array[2]);
|
|
|
|
$this->query_map[] = array(
|
|
'type' => 'join',
|
|
'conjunction' => strtoupper($type).' JOIN ',
|
|
'string' => $condition,
|
|
);
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Group the results by the selected field(s)
|
|
*
|
|
* @param mixed $field
|
|
* @return $this
|
|
*/
|
|
public function group_by($field)
|
|
{
|
|
if ( ! is_scalar($field))
|
|
{
|
|
$this->group_array = array_map(array($this->db, 'quote_ident'), $field);
|
|
}
|
|
else
|
|
{
|
|
$this->group_array[] = $this->db->quote_ident($field);
|
|
}
|
|
|
|
$this->group_string = ' GROUP BY ' . implode(', ', $this->group_array);
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Order the results by the selected field(s)
|
|
*
|
|
* @param string $field
|
|
* @param string $type
|
|
* @return $this
|
|
*/
|
|
public function order_by($field, $type="")
|
|
{
|
|
// Random case
|
|
if (stripos($type, 'rand') !== FALSE)
|
|
{
|
|
$type = (($rand = $this->sql->random()) !== FALSE ) ? $rand : 'ASC';
|
|
}
|
|
|
|
// Set fields for later manipulation
|
|
$field = $this->db->quote_ident($field);
|
|
$this->order_array[$field] = $type;
|
|
|
|
$order_clauses = array();
|
|
|
|
// Flatten key/val pairs into an array of space-separated pairs
|
|
foreach($this->order_array as $k => $v)
|
|
{
|
|
$order_clauses[] = $k . ' ' . strtoupper($v);
|
|
}
|
|
|
|
// Set the final string
|
|
$this->order_string = (empty($rand))
|
|
? ' ORDER BY '.implode(',', $order_clauses)
|
|
: ' ORDER BY'.$rand;
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Set a limit on the current sql statement
|
|
*
|
|
* @param int $limit
|
|
* @param int $offset
|
|
* @return string
|
|
*/
|
|
public function limit($limit, $offset=FALSE)
|
|
{
|
|
$this->limit = $limit;
|
|
$this->offset = $offset;
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// ! Query execution methods
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Select and retrieve all records from the current table, and/or
|
|
* execute current compiled query
|
|
*
|
|
* @param $table
|
|
* @param int $limit
|
|
* @param int $offset
|
|
* @return object
|
|
*/
|
|
public function get($table='', $limit=FALSE, $offset=FALSE)
|
|
{
|
|
// Set the table
|
|
if ( ! empty($table))
|
|
{
|
|
$this->from($table);
|
|
}
|
|
|
|
// Set the limit, if it exists
|
|
if ($limit !== FALSE)
|
|
{
|
|
$this->limit($limit, $offset);
|
|
}
|
|
|
|
$sql = $this->_compile();
|
|
|
|
// Do prepared statements for anything involving a "where" clause
|
|
if ( ! empty($this->query_map))
|
|
{
|
|
$result = $this->db->prepare_execute($sql, $this->values);
|
|
}
|
|
else
|
|
{
|
|
// Otherwise, a simple query will do.
|
|
$result = $this->db->query($sql);
|
|
}
|
|
|
|
// Reset for next query
|
|
$this->_reset();
|
|
|
|
return $result;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Creates an insert clause, and executes it
|
|
*
|
|
* @param string $table
|
|
* @param mixed $data
|
|
* @return mixed
|
|
*/
|
|
public function insert($table, $data=array())
|
|
{
|
|
// No use duplicating logic!
|
|
if ( ! empty($data))
|
|
{
|
|
$this->set($data);
|
|
}
|
|
|
|
$sql = $this->_compile("insert", $table);
|
|
|
|
$res = $this->db->prepare_execute($sql, $this->values);
|
|
|
|
$this->_reset();
|
|
|
|
return $res;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Creates an update clause, and executes it
|
|
*
|
|
* @param string $table
|
|
* @param mixed $data
|
|
* @return mixed
|
|
*/
|
|
public function update($table, $data=array())
|
|
{
|
|
// No use duplicating logic!
|
|
if ( ! empty($data))
|
|
{
|
|
$this->set($data);
|
|
}
|
|
|
|
$sql = $this->_compile('update', $table);
|
|
|
|
$res = $this->db->prepare_execute($sql, $this->values);
|
|
|
|
$this->_reset();
|
|
|
|
// Run the query
|
|
return $res;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Deletes data from a table
|
|
*
|
|
* @param string $table
|
|
* @param mixed $where
|
|
* @return mixed
|
|
*/
|
|
public function delete($table, $where='')
|
|
{
|
|
// Set the where clause
|
|
if ( ! empty($where))
|
|
{
|
|
$this->where($where);
|
|
}
|
|
|
|
// Create the SQL and parameters
|
|
$sql = $this->_compile("delete", $table);
|
|
|
|
$res = $this->db->prepare_execute($sql, $this->values);
|
|
|
|
$this->_reset();
|
|
|
|
// Delete the table rows, and return the result
|
|
return $res;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// ! Query Grouping Methods
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Adds a paren to the current query for query grouping
|
|
*
|
|
* @return $this
|
|
*/
|
|
public function group_start()
|
|
{
|
|
$this->query_map[] = array(
|
|
'type' => 'group_start',
|
|
'conjunction' => '',
|
|
'string' => ' ('
|
|
);
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Adds a paren to the current query for query grouping,
|
|
* prefixed with 'OR'
|
|
*
|
|
* @return $this
|
|
*/
|
|
public function or_group_start()
|
|
{
|
|
$this->query_map[] = array(
|
|
'type' => 'group_start',
|
|
'conjunction' => '',
|
|
'string' => ' OR ('
|
|
);
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Adds a paren to the current query for query grouping,
|
|
* prefixed with 'OR NOT'
|
|
*
|
|
* @return $this
|
|
*/
|
|
public function or_not_group_start()
|
|
{
|
|
$this->query_map[] = array(
|
|
'type' => 'group_start',
|
|
'conjunction' => '',
|
|
'string' => ' OR NOT ('
|
|
);
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Ends a query group
|
|
*
|
|
* @return $this
|
|
*/
|
|
public function group_end()
|
|
{
|
|
$this->query_map[] = array(
|
|
'type' => 'group_end',
|
|
'conjunction' => '',
|
|
'string' => ' ) '
|
|
);
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// ! Miscellaneous Methods
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Sets values for inserts / updates / deletes
|
|
*
|
|
* @param mixed $key
|
|
* @param mixed $val
|
|
* @return $this
|
|
*/
|
|
public function set($key, $val)
|
|
{
|
|
// Plain key, value pair
|
|
if (is_scalar($key) && is_scalar($val))
|
|
{
|
|
$this->set_array[$key] = $val;
|
|
$this->values[] = $val;
|
|
}
|
|
// Object or array
|
|
elseif ( ! is_scalar($key))
|
|
{
|
|
foreach($key as $k => $v)
|
|
{
|
|
$this->set_array[$k] = $v;
|
|
$this->values[] = $val;
|
|
}
|
|
}
|
|
|
|
// Use the keys of the array to make the insert/update string
|
|
// Escape the field names
|
|
$this->set_array_keys = array_map(array($this->db, 'quote_ident'), array_keys($this->set_array));
|
|
|
|
// Generate the "set" string
|
|
$this->set_string = implode('=?, ', $this->set_array_keys);
|
|
$this->set_string .= '=?';
|
|
|
|
return $this;
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* Clear out the class variables, so the next query can be run
|
|
*/
|
|
private function _reset()
|
|
{
|
|
// Only unset class variables that
|
|
// are not callable. Otherwise, we'll
|
|
// delete class methods!
|
|
foreach($this as $name => $var)
|
|
{
|
|
// Skip properties that are needed for every query
|
|
$save_properties = array(
|
|
'db',
|
|
'sql'
|
|
);
|
|
|
|
if (in_array($name, $save_properties))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
// Nothing query-generation related is safe!
|
|
if ( ! is_callable($this->$name))
|
|
{
|
|
unset($this->$name);
|
|
}
|
|
|
|
// Set values as an empty array
|
|
$this->values = array();
|
|
}
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
|
|
/**
|
|
* String together the sql statements for sending to the db
|
|
*
|
|
* @param string $type
|
|
* @param string $table
|
|
* @return $string
|
|
*/
|
|
private function _compile($type='', $table="")
|
|
{
|
|
$sql = '';
|
|
|
|
switch($type)
|
|
{
|
|
default:
|
|
$sql = 'SELECT * FROM '.$this->from_string;
|
|
|
|
// Set the select string
|
|
if ( ! empty($this->select_string))
|
|
{
|
|
// Replace the star with the selected fields
|
|
$sql = str_replace('*', $this->select_string, $sql);
|
|
}
|
|
|
|
// Set the where string
|
|
if ( ! empty($this->query_map))
|
|
{
|
|
foreach($this->query_map as $q)
|
|
{
|
|
$sql .= $q['conjunction'] . $q['string'];
|
|
}
|
|
}
|
|
|
|
// Set the group_by string
|
|
if ( ! empty($this->group_string))
|
|
{
|
|
$sql .= $this->group_string;
|
|
}
|
|
|
|
// Set the order_by string
|
|
if ( ! empty($this->order_string))
|
|
{
|
|
$sql .= $this->order_string;
|
|
}
|
|
|
|
// Set the limit via the class variables
|
|
if (isset($this->limit) && is_numeric($this->limit))
|
|
{
|
|
$sql = $this->sql->limit($sql, $this->limit, $this->offset);
|
|
}
|
|
break;
|
|
|
|
case "insert":
|
|
$param_count = count($this->set_array);
|
|
$params = array_fill(0, $param_count, '?');
|
|
$sql = 'INSERT INTO '. $this->db->quote_ident($table) .
|
|
' (' . implode(', ', $this->set_array_keys) .
|
|
') VALUES ('.implode(', ', $params).')';
|
|
break;
|
|
|
|
case "update":
|
|
$sql = 'UPDATE '.$this->db->quote_ident($table). ' SET '. $this->set_string;
|
|
|
|
// Set the where string
|
|
if ( ! empty($this->query_map))
|
|
{
|
|
foreach($this->query_map as $q)
|
|
{
|
|
$sql .= $q['conjunction'] . $q['string'];
|
|
}
|
|
}
|
|
break;
|
|
|
|
case "delete":
|
|
$sql = 'DELETE FROM '.$this->db->quote_ident($table);
|
|
|
|
// Set the where string
|
|
if ( ! empty($this->query_map))
|
|
{
|
|
foreach($this->query_map as $q)
|
|
{
|
|
$sql .= $q['conjunction'] . $q['string'];
|
|
}
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
echo $sql.'<br />';
|
|
|
|
return $sql;
|
|
}
|
|
}
|
|
// End of query_builder.php
|