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sqlbuilder.php
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sqlbuilder.php
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<?php
class SqlBuilder {
private $mode;
private $fields;
private $tables;
private $conditions;
private $groups;
private $havings;
private $orders;
private $limit;
private $offset;
private function start($mode) {
$this->mode = $mode;
$this->fields = [];
$this->tables = [];
$this->conditions = [];
$this->groups = [];
$this->havings = [];
$this->orders = [];
$this->limit = -1;
$this->offset = -1;
return $this;
}
public function addField($field) {
$this->fields[] = $field;
return $this;
}
public function addTable($table) {
$this->tables[] = $table;
return $this;
}
public function addCondition($condition) {
$this->conditions[] = $condition;
return $this;
}
public function addGroup($group) {
$this->groups[] = $group;
return $this;
}
public function addHaving($having) {
$this->havings[] = $having;
return $this;
}
public function addOrder($order) {
$this->orders[] = $order;
return $this;
}
public function setFields(...$fields) {
$this->fields = $fields;
return $this;
}
public function setTables(...$tables) {
$this->tables = $tables;
return $this;
}
public function setConditions(...$conditions) {
$this->conditions = $conditions;
return $this;
}
public function setGroups(...$groups) {
$this->groups = $groups;
return $this;
}
public function setHavings(...$havings) {
$this->havings = $havings;
return $this;
}
public function setOrders(...$orders) {
$this->orders = $orders;
return $this;
}
public function setLimit($limit) {
$this->limit = $limit;
return $this;
}
public function setOffset($offset) {
$this->offset = $offset;
return $this;
}
// TSQL
public function insert() {
return $this->start('insert');
}
public function into($table) {
return $this->setTables($table);
}
public function values(...$fields) {
return $this->setFields(...$fields);
}
public function update($table) {
$this->start('update');
return $this->setTables($table);
}
public function set(...$fields) {
return $this->setFields(...$fields);
}
public function select(...$fields) {
$this->start('select');
if (count($fields) === 0) {
return $this->setFields('*');
} else {
return $this->setFields(...$fields);
}
}
public function delete() {
return $this->start('delete');
}
public function from($table) {
return $this->setTables($table);
}
public function join($table) {
return $this->addTable('inner join ' . $table);
}
public function leftJoin($table) {
return $this->addTable('left join ' . $table);
}
public function rightJoin($table) {
return $this->addTable('right join ' . $table);
}
public function on(...$conditions) {
$index = count($this->tables) - 1;
$table = $this->tables[$index];
$table .= ' on ';
$table .= implode(' and ', $conditions);
$this->tables[$index] = $table;
return $this;
}
public function where(...$conditions) {
return $this->setConditions(...$conditions);
}
public function groupBy(...$groups) {
return $this->setGroups(...$groups);
}
public function having(...$havings) {
return $this->setHavings(...$havings);
}
public function orderBy(...$orders) {
return $this->setOrders(...$orders);
}
public function limit($limit) {
return $this->setLimit($limit);
}
public function offset($offset) {
return $this->setOffset($offset);
}
// toString
private function selectToString() {
$sql = 'select ';
$sql .= implode(', ', $this->fields);
$sql .= ' from ';
$sql .= implode(' ', $this->tables);
if (count($this->conditions) > 0) {
$sql .= ' where ';
$sql .= implode(' and ', $this->conditions);
}
if (count($this->groups) > 0) {
$sql .= ' group by ';
$sql .= implode(', ', $this->groups);
if (count($this->havings) > 0) {
$sql .= ' having ';
$sql .= implode(' and ', $this->havings);
}
}
if (count($this->orders) > 0) {
$sql .= ' order by ';
$sql .= implode(', ', $this->orders);
}
if ($this->limit > 0) {
$sql .= ' limit ';
$sql .= $this->limit;
}
if ($this->offset > -1) {
$sql .= ' offset ';
$sql .= $this->offset;
}
return $sql;
}
private function insertToString() {
$sql = "insert into {$this->tables[0]} (";
$sql .= implode(', ', $this->fields);
$sql .= ') values (';
$sql .= implode(', ', array_map(function($field) {
return '?';
}, $this->fields));
$sql .= ')';
return $sql;
}
private function updateToString() {
$sql = "update {$this->tables[0]} set ";
$sql .= implode(', ', array_map(function($field) {
return "{$field} = ?";
}, $this->fields));
if (count($this->conditions) > 0) {
$sql .= ' where ';
$sql .= implode(' and ', $this->conditions);
}
return $sql;
}
private function deleteToString() {
$sql = "delete from {$this->tables[0]}";
if (count($this->conditions) > 0) {
$sql .= ' where ';
$sql .= implode(' and ', $this->conditions);
}
return $sql;
}
public function __toString() {
switch ($this->mode) {
case 'select':
return $this->selectToString();
break;
case 'insert':
return $this->insertToString();
break;
case 'update':
return $this->updateToString();
break;
case 'delete':
return $this->deleteToString();
break;
}
}
}