Code Modernization: Replace non-canonical scalar type casts with canonical versions.

PHP 8.5 deprecates four alternative scalar type names in favor of their canonical names:

* `boolean` → `bool`
* `double` → `float`
* `integer` → `int`
* `binary` → `string`

References:
* [https://php.watch/versions/8.5/boolean-double-integer-binary-casts-deprecated PHP.Watch: PHP 8.5: Non-canonical scalar type casts (boolean|double|integer|binary) deprecated]
* [https://wiki.php.net/rfc/deprecations_php_8_5#deprecate_non-standard_cast_names PHP RFC: Deprecations for PHP 8.5: Deprecate non-standard cast names]

Follow-up to [1346], [11875].

Props TobiasBg, swissspidy, SergeyBiryukov.
See #63061.

git-svn-id: https://develop.svn.wordpress.org/trunk@60659 602fd350-edb4-49c9-b593-d223f7449a82

Author: SergeyBiryukov

src/wp-includes/IXR/class-IXR-message.php

@@ -177,7 +177,7 @@ function tag_close($parser, $tag)
                 $valueFlag = true;
                 break;
             case 'double':
-                $value = (double)trim($this->_currentTagContents);
+                $value = (float)trim($this->_currentTagContents);
                 $valueFlag = true;
                 break;
             case 'string':
@@ -196,7 +196,7 @@ function tag_close($parser, $tag)
                 }
                 break;
             case 'boolean':
-                $value = (boolean)trim($this->_currentTagContents);
+                $value = (bool)trim($this->_currentTagContents);
                 $valueFlag = true;
                 break;
             case 'base64':

src/wp-includes/class-json.php

@@ -662,8 +662,8 @@ function decode($str)
                     // return (float)$str;
 
                     // Return float or int, as appropriate
-                    return ((float)$str == (integer)$str)
-                        ? (integer)$str
+                    return ((float)$str == (int)$str)
+                        ? (int)$str
                         : (float)$str;
 
                 } elseif (preg_match('/^("|\').*(\1)$/s', $str, $m) && $m[1] == $m[2]) {