Fix incompatibility with PHP 8 (#5)

* Fix incompatibility with PHP 8

preg_split(): Passing null to parameter #3 ($limit) of type int is deprecated

* Fix incompatibility with PHP 8

Automatic conversion of false to array is deprecated

* Fix incorrect type in phpdoc params

src/PHPSQLParser/PHPSQLParser.php

@@ -66,7 +66,7 @@ class PHPSQLParser
      * Constructor. It simply calls the parse() function.
      * Use the public variable $parsed to get the output.
      *
-     * @param String|bool $sql The SQL statement.
+     * @param string|bool $sql The SQL statement.
      * @param bool $calcPositions True, if the output should contain [position], false otherwise.
      * @param array $options
      */
@@ -87,7 +87,7 @@ public function __construct($sql = false, $calcPositions = false, array $options
      * of the positions needs some time, if you don't need positions in
      * your application, set the parameter to false.
      *
-     * @param String $sql The SQL statement.
+     * @param string $sql The SQL statement.
      * @param boolean $calcPositions True, if the output should contain [position], false otherwise.
      *
      * @return array An associative array with all meta information about the SQL statement.
@@ -127,7 +127,7 @@ protected function getPositionCalculator()
     /**
      * Add a custom function to the parser.  no return value
      *
-     * @param String $token The name of the function to add
+     * @param string $token The name of the function to add
      */
     public function addCustomFunction($token)
     {
@@ -137,7 +137,7 @@ public function addCustomFunction($token)
     /**
      * Remove a custom function from the parser.  no return value
      *
-     * @param String $token The name of the function to remove
+     * @param string $token The name of the function to remove
      */
     public function removeCustomFunction($token)
     {

src/PHPSQLParser/lexer/PHPSQLLexer.php

@@ -74,7 +74,7 @@ public function split($sql)
         $tokens = preg_split(
             $this->splitters->getSplittersRegexPattern(),
             $sql,
-            null,
+            -1,
             PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY
         );
         $tokens = $this->concatComments($tokens);

src/PHPSQLParser/processors/SQLProcessor.php

@@ -60,7 +60,7 @@ public function process($tokens)
         $prev_category = "";
         $token_category = "";
         $skip_next = 0;
-        $out = false;
+        $out = [];
 
         // $tokens may come as a numeric indexed array starting with an index greater than 0 (or as a boolean)
         if (is_array($tokens)) {

tests/bootstrap.php

@@ -7,7 +7,7 @@
  * from a file as serialized string.
  * Returns an unserialized value from the given file.
  *
- * @param String $filename
+ * @param string $filename
  */
 function getExpectedValue($path, $filename, $unserialize = true) {
 	$path = explode(DIRECTORY_SEPARATOR, $path);

tests/cases/AbstractTestCase.php

@@ -32,7 +32,7 @@ protected function setup() {
 	 * from a file as serialized string.
 	 * Returns an unserialized value from the given file.
 	 *
-	 * @param String $filename
+	 * @param string $filename
 	 */
 	protected function getExpectedValue($path, $filename, $unserialize = true) {
 		$path = explode(DIRECTORY_SEPARATOR, $path);