Merge pull request Dolibarr#27853 from thibdrev/patch-4

qual: phpstan for htdocs/accountancy/class/bookkeeping.class.php

htdocs/accountancy/class/bookkeeping.class.php

@@ -1802,10 +1802,10 @@ public function fetchPerMvt($piecenum, $mode = '')
 	}
 
 	/**
-	 * Return next number movement
+	 * Return next movement number
 	 *
-	 * @param	string	$mode	Mode
-	 * @return	int			Return integer <0 if KO, >0 if OK (Next numero to use)
+	 * @param	string	$mode		Mode
+	 * @return	int<1, max>|-1		Return next movement number or -1 if error
 	 */
 	public function getNextNumMvt($mode = '')
 	{
@@ -1830,7 +1830,7 @@ public function getNextNumMvt($mode = '')
 		} else {
 			$this->error = "Error ".$this->db->lasterror();
 			dol_syslog(get_class($this)."::getNextNumMvt ".$this->error, LOG_ERR);
-			return "-1";
+			return -1;
 		}
 	}
 
@@ -2253,7 +2253,7 @@ public function get_compte_desc($account = null)
 	 *
 	 * @param 	string		$alias		Bookkeeping alias table
 	 * @param 	bool		$force		Force reload
-	 * @return 	string					SQL filter
+	 * @return 	string|null				SQL filter or null if error
 	 */
 	public function getCanModifyBookkeepingSQL($alias = '', $force = false)
 	{
@@ -2621,7 +2621,7 @@ public function accountingResult($date_start, $date_end)
 			}
 		}
 
-		return $income_statement_amount;
+		return (string) $income_statement_amount;
 	}
 
 	/**
@@ -2761,7 +2761,7 @@ public function closeFiscalPeriod($fiscal_period_id, $new_fiscal_period_id, $sep
 
 							$bookkeeping = new BookKeeping($this->db);
 							$bookkeeping->doc_date = $new_fiscal_period->date_start;
-							$bookkeeping->date_lim_reglement = (string) '';
+							$bookkeeping->date_lim_reglement = 0;
 							$bookkeeping->doc_ref = $new_fiscal_period->label;
 							$bookkeeping->date_creation = $now;
 							$bookkeeping->doc_type = 'closure';
@@ -2808,7 +2808,7 @@ public function closeFiscalPeriod($fiscal_period_id, $new_fiscal_period_id, $sep
 
 						$bookkeeping = new BookKeeping($this->db);
 						$bookkeeping->doc_date = $new_fiscal_period->date_start;
-						$bookkeeping->date_lim_reglement = (string) '';
+						$bookkeeping->date_lim_reglement = 0;
 						$bookkeeping->doc_ref = $new_fiscal_period->label;
 						$bookkeeping->date_creation = $now;
 						$bookkeeping->doc_type = 'closure';