php 8 compatibility fixes

Author: Samnan

lib/db/mysqli.php

@@ -175,7 +175,7 @@ function query($sql, $stack=0) {		// call with query($sql, 1) to store multiple
 			return false;
 		}
 
-		if (v($this->result[$stack]))
+		if (v($this->result[$stack]) && gettype($this->result[$stack]) == 'object')
 			@mysqli_free_result($this->result[$stack]);
 
 		$this->result[$stack] = "";
@@ -530,7 +530,7 @@ function getTruncateCommand( $table ) {
 	function getFieldValues($table, $name) {
 		$sql = 'show full fields from `'.$table.'` where `Field` = \''.$this->escape($name).'\'';
 		$res = mysqli_query($this->conn, $sql);
-		if (mysqli_num_rows($res) == 0)
+		if (gettype($res) != 'object' ||  mysqli_num_rows($res) == 0)
 			return ( (object) array('list' => array()) );
 		$row = mysqli_fetch_array($res);
 		$type = $row['Type'];
@@ -828,4 +828,4 @@ function set_constraint( $constraint, $value ) {
 		}
 	}
 }
-?>
+?>

lib/external/jcryption.php

@@ -119,7 +119,7 @@ private function _bin2int($str) {
 		$result = '0';
 		$n = strlen($str);
 		do {
-			$result = bcadd(bcmul($result, '256'), ord($str {--$n} ));
+			$result = bcadd(bcmul($result, '256'), ord($str [--$n] ));
 		} while ($n > 0);
 		return $result;
 	}
@@ -196,7 +196,7 @@ private function _invmod($num, $mod) {
 	private function _bitLen($num) {
 		$tmp = $this->_int2bin($num);
 		$bit_len = strlen($tmp) * 8;
-		$tmp = ord($tmp {strlen($tmp) - 1} );
+		$tmp = ord($tmp [strlen($tmp) - 1] );
 		if (!$tmp) {
 			$bit_len -= 8;
 		} else {