Polyfill json_validate that is not defined in PHP <8.3 (#37)

* Polyfill json_validate()

Author: xxsimoxx

classes/class-plugin-install.php

@@ -156,7 +156,7 @@ public static function do_directory_request( $args = array(), $type = 'plugins'
 		if ( $e !== 200 ) {
 			$result['error'] = $response['response']['message'] . '.';
 			$result['code']  = $response['response']['code'];
-			if ( ! isset( $response['body'] ) || ! json_validate( $response['body'] ) ) {
+			if ( ! isset( $response['body'] ) || ! self::json_validate( $response['body'] ) ) {
 				return $result;
 			}
 			$api_message = json_decode( $response['body'], true );

classes/class-theme-install.php

@@ -149,7 +149,7 @@ public static function do_directory_request( $args = array(), $type = 'themes' )
 		if ( $e !== 200 ) {
 			$result['error'] = $response['response']['message'] . '.';
 			$result['code']  = $response['response']['code'];
-			if ( ! isset( $response['body'] ) || ! json_validate( $response['body'] ) ) {
+			if ( ! isset( $response['body'] ) || ! self::json_validate( $response['body'] ) ) {
 				return $result;
 			}
 			$api_message = json_decode( $response['body'], true );

classes/trait-helpers.php

@@ -4,7 +4,6 @@
 
 trait Helpers {
 
-
 	/**
 	 * Get all substrings within text that are found between two other, specified strings
 	 *
@@ -32,4 +31,16 @@ private function get_markdown_contents( $str, $startDelimiter, $endDelimiter ) {
 
 		return $contents;
 	}
+
+	/**
+	 * Polyfill for json_validate
+	 * The function is defined only in PHP 8 >= 8.3.0
+	 */
+	private static function json_validate( $json ) {
+		if ( function_exists( 'json_validate' ) ) {
+			return json_validate( $json );
+		}
+		return json_decode( $json ) !== null;
+	}
+
 }

classicpress-directory-integration.php

@@ -4,7 +4,7 @@
  * -----------------------------------------------------------------------------
  * Plugin Name:  ClassicPress Directory Integration
  * Description:  Install and update plugins and themes from ClassicPress directory.
- * Version:      1.1.3
+ * Version:      1.1.4
  * Author:       ClassicPress Contributors
  * Author URI:   https://www.classicpress.net
  * Plugin URI:   https://www.classicpress.net