system/Database/BaseBuilder.php
protected function _like($field, string $match = '', string $type = 'AND ', string $side = 'both', string $not = '', bool $escape = null, bool $insensitiveSearch = false)
	{
		if (! is_array($field))
		{
			$field = [$field => $match];
		}

		$escape = is_bool($escape) ? $escape : $this->db->protectIdentifiers;

		// lowercase $side in case somebody writes e.g. 'BEFORE' instead of 'before' (doh)
		$side = strtolower($side);

		foreach ($field as $k => $v)
		{
			$prefix = empty($this->QBWhere) ? $this->groupGetType('') : $this->groupGetType($type);

			if ($insensitiveSearch === true)
			{
				$v = strtolower($v);
			}

			if ($side === 'none')
			{
				$bind = $this->setBind($k, $v, $escape);
			}
			elseif ($side === 'before')
			{
				$bind = $this->setBind($k, "%$v", $escape);
			}
			elseif ($side === 'after')
			{
				$bind = $this->setBind($k, "$v%", $escape);
			}
			else
			{
				$bind = $this->setBind($k, "%$v%", $escape);
			}

			$like_statement = $this->_like_statement($prefix, $k, $not, $bind, $insensitiveSearch);

			// some platforms require an escape sequence definition for LIKE wildcards
			if ($escape === true && $this->db->likeEscapeStr !== '')
			{
				$like_statement .= sprintf($this->db->likeEscapeStr, $this->db->likeEscapeChar);
			}

			$this->QBWhere[] = [
				'condition' => $like_statement,
				'escape'    => $escape,
			];
		}

		return $this;
	}
protected function _like($field, string $match = '', string $type = 'AND ', string $side = 'both', string $not = '', bool $escape = null, bool $insensitiveSearch = false)
	{
		if (! is_array($field))
		{
			$field = [$field => $match];
		}

		$escape = is_bool($escape) ? $escape : $this->db->protectIdentifiers;

		// lowercase $side in case somebody writes e.g. 'BEFORE' instead of 'before' (doh)
		$side = strtolower($side);

		foreach ($field as $k => $v)
		{
			$prefix = empty($this->QBWhere) ? $this->groupGetType('') : $this->groupGetType($type);

			if ($insensitiveSearch === true)
			{
				$v = strtolower($v);
			}

			if ($side === 'none')
			{
				$bind = $this->setBind($k, $v, $escape);
			}
			elseif ($side === 'before')
			{
				$bind = $this->setBind($k, "%$v", $escape);
			}
			elseif ($side === 'after')
			{
				$bind = $this->setBind($k, "$v%", $escape);
			}
			else
			{
				$bind = $this->setBind($k, "%$v%", $escape);
			}

			$like_statement = $this->_like_statement($prefix, $k, $not, $bind, $insensitiveSearch);

			// some platforms require an escape sequence definition for LIKE wildcards
			if ($escape === true && $this->db->likeEscapeStr !== '')
			{
				$like_statement .= sprintf($this->db->likeEscapeStr, $this->db->likeEscapeChar);
			}

			$this->QBWhere[] = [
				'condition' => $like_statement,
				'escape'    => $escape,
			];
		}

		return $this;
	}
Internal LIKE

@used-by like()
@used-by orLike()
@used-by notLike()
@used-by orNotLike()

@param mixed   $field
@param string  $match
@param string  $type
@param string  $side
@param string  $not
@param boolean $escape
@param boolean $insensitiveSearch IF true, will force a case-insensitive search

@return BaseBuilder