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<?php |
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namespace Godsgood33\Php_Db; |
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/** |
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* Class to create a where clause |
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* |
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* @author Ryan Prather <[email protected]> |
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*/ |
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class DBWhere |
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{ |
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/** |
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* Global to represent an IN statement (e.g. |
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* WHERE field IN (1,2)) |
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* |
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* @var string |
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*/ |
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const IN = 'IN'; |
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/** |
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* Global to represent a NOT IN statement (e.g. |
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* WHERE field NOT IN (1,2)) |
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* |
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* @var string |
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*/ |
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const NOT_IN = 'NOT IN'; |
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/** |
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* Global to represent a BETWEEN statement (e.g. |
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* WHERE field BETWEEN 1 and 2) |
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* |
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* @var string |
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*/ |
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const BETWEEN = 'BETWEEN'; |
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/** |
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* Global to represent a LIKE statement (e.g. |
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* WHERE field LIKE '%value%') |
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* |
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* @var string |
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*/ |
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const LIKE = 'LIKE'; |
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/** |
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* Global to represent a NOT LIKE statement (e.g. |
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* WHERE field NOT LIKE '%value%') |
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* |
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* @var string |
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*/ |
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const NOT_LIKE = 'NOT LIKE'; |
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/** |
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* Global to represent an IS statement (e.g. |
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* WHERE field IS NULL) |
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* |
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* @var string |
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*/ |
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const IS = 'IS'; |
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/** |
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* Global to represent an IS NOT statement (e.g. |
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* WHERE field IS NOT NULL) |
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* |
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* @var string |
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*/ |
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const IS_NOT = 'IS NOT'; |
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/** |
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* Array to store the necessary class variables |
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* |
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* @var array |
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*/ |
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protected $data = []; |
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/** |
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* Constructor |
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* |
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* @param string $field |
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* @param mixed $value |
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* @param string $operator |
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*/ |
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public function __construct($field = null, $value = null, $operator = '=') |
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{ |
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$this->data = [ |
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'index' => 0, |
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'field' => $field, |
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'value' => $value, |
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'low' => null, |
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'high' => null, |
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'escape' => true, |
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'operator' => $operator, |
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'sqlOperator' => 'AND', |
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'backticks' => true, |
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'openParen' => false, |
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'closeParen' => false, |
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'caseInsensitive' => false |
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]; |
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} |
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/** |
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* Method to return the variables |
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* |
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* @param string $var |
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* |
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* @return mixed |
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* |
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* @throws InvalidArgumentException |
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*/ |
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public function __get($var) |
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{ |
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if(!in_array($var, [ |
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'index', 'field', 'value', 'low', 'high', 'operator', 'backticks', |
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'sqlOperator', 'escape', 'openParen', 'closeParen', 'caseInsensitive' |
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])) { |
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1 |
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$trace = \debug_backtrace(); |
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throw new \InvalidArgumentException("Property not allowed via __get(): $var in {$trace[0]['file']} on line {$trace[0]['line']}", E_USER_WARNING); |
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} |
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return $this->data[$var]; |
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} |
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/** |
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* Method to set a variable |
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* |
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* @param string $name |
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* @param mixed $value |
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* |
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* @throws InvalidArgumentException |
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*/ |
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public function __set($name, $value) |
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{ |
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if(!in_array($name, [ |
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'index', 'field', 'value', 'low', 'high', 'operator', 'backticks', |
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'sqlOperator', 'escape', 'openParen', 'closeParen', 'caseInsensitive' |
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])) { |
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1 |
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$trace = \debug_backtrace(); |
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throw new \InvalidArgumentException("Property not allowed via __set(): $name in {$trace[0]['file']} on line {$trace[0]['line']}", E_USER_WARNING); |
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} |
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$this->data[$name] = $value; |
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} |
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/** |
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* Method to parse where clauses |
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*/ |
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public function __toString() |
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{ |
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$ret = ''; |
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if (is_null($this->data['field']) && isset($this->data['closeParen']) && $this->data['closeParen']) { |
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$ret .= ")"; |
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return $ret; |
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} |
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switch ($this->data['operator']) { |
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case self::BETWEEN: |
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if (! isset($this->data['field']) || ! isset($this->data['low']) || ! isset($this->data['high'])) { |
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return ''; |
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} |
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break; |
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default: |
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if (! $this->data['field']) { |
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1 |
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return ''; |
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} |
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} |
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if ($this->data['openParen']) { |
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$ret .= " ("; |
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} |
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if (! $this->data['backticks']) { |
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1 |
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$field = $this->data['field']; |
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} else { |
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$field = "`{$this->data['field']}`"; |
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} |
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if ($this->data['operator'] == self::IN || $this->data['operator'] == self::NOT_IN) { |
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if (is_string($this->data['value'])) { |
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$ret .= " {$field} {$this->data['operator']} " . (strpos($this->data['value'], '(') !== false ? $this->data['value'] : "({$this->data['value']})"); |
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} elseif (is_array($this->data['value'])) { |
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$ret .= " {$field} {$this->data['operator']} (" . implode(",", $this->data['value']) . ")"; |
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} else { |
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return ''; |
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} |
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} elseif ($this->data['operator'] == self::BETWEEN) { |
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$low = (is_string($this->data['low']) ? "'{$this->data['low']}'" : $this->data['low']); |
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$high = (is_string($this->data['high']) ? "'{$this->data['high']}'" : $this->data['high']); |
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$ret .= " {$field} BETWEEN {$low} AND {$high}"; |
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} else { |
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$value = (is_null($this->data['value']) ? "NULL" : $this->data['value']); |
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if ($this->data['caseInsensitive']) { |
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$ret .= " LOWER({$field}) {$this->data['operator']} LOWER({$value})"; |
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} else { |
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$ret .= " {$field} {$this->data['operator']} {$value}"; |
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} |
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} |
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if (isset($this->data['closeParen']) && $this->data['closeParen']) { |
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$ret .= ")"; |
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} |
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return $ret; |
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} |
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} |
godsgood33 /
php-db
