fix issue with multiple functions on hook

zHook.php

@@ -4,40 +4,40 @@
  * URL: https://github.com/zevilz/zHook
  * Author: Alexandr "zEvilz" Emshanov
  * License: MIT
- * Version: 1.0.0
+ * Version: 1.1.0
 */
 
 /**
  * Add filter to hooks array
  *
- * @param string $name Hook name
- * @param string $function Function name for hook
- * @param int $priority Function priority
- * @param int $accepted_args Num of accepted args for function
+ * @param string $name          Hook name
+ * @param string $function      Function name for hook
+ * @param int    $priority      Function priority
+ * @param int    $accepted_args Num of accepted args for function
  *
  * @return bool Result
  */
-function add_filter($name, $function, $priority = 10, $accepted_args = 1) {
+function add_filter( $name, $function, $priority = 10, $accepted_args = 1 ) {
 	global $hooks;
 	$function_isset = false;
-	if (isset($hooks[$name])) {
-		foreach ($hooks[$name] as $hook) {
-			if ($hook['function'] == $function) {
+	if ( isset( $hooks[$name] ) ) {
+		foreach ( $hooks[$name] as $hook ) {
+			if ( $hook['function'] == $function ) {
 				$function_isset = true;
 			}
 		}
 	}
-	if (!$function_isset) {
-		if (!preg_match("|^[\d]+$|", $priority)) {
+	if ( ! $function_isset ) {
+		if ( ! preg_match( "|^[\d]+$|", $priority ) ) {
 			$priority = 10;
 		}
-		if (!preg_match("|^[\d]+$|", $accepted_args)) {
+		if ( ! preg_match( "|^[\d]+$|", $accepted_args ) ) {
 			$accepted_args = 1;
 		}
 		$hooks[$name][] = [
 			'function' => $function,
 			'priority' => $priority,
-			'accepted_args' => $accepted_args
+			'accepted_args' => $accepted_args,
 		];
 		return true;
 	}
@@ -49,46 +49,43 @@ function add_filter($name, $function, $priority = 10, $accepted_args = 1) {
 /**
  * Add action to hooks array
  *
- * @param string $name Hook name
- * @param string $function Function name for hook
- * @param int $priority Function priority
- * @param int $accepted_args Num of accepted args for function
+ * @param string $name          Hook name
+ * @param string $function      Function name for hook
+ * @param int    $priority      Function priority
+ * @param int    $accepted_args Num of accepted args for function
  *
  * @return bool Result
  */
-function add_action($name, $function, $priority = 10, $accepted_args = 0) {
-	return add_filter($name, $function, $priority, $accepted_args);
+function add_action( $name, $function, $priority = 10, $accepted_args = 0 ) {
+	return add_filter( $name, $function, $priority, $accepted_args );
 }
 
 /**
  * Apply hook filters
  *
  * @param string $name Hook name
- * @param mixed $data Input data
+ * @param mixed  $data Input data
  *
  * @return mixed Filtered input data
  */
-function apply_filters($name, $data) {
+function apply_filters( $name, $data ) {
 	global $hooks;
-	if (isset($hooks[$name])) {
-		usort($hooks[$name], function($a, $b){
-			return ($a['priority'] - $b['priority']);
-		});
+	if ( isset( $hooks[$name] ) ) {
+		usort( $hooks[$name], function( $a, $b ) {
+			return ( $a['priority'] - $b['priority'] );
+		} );
 		$args = func_get_args();
-		array_shift($args);
-		$num_args = count($args);
-		foreach ($hooks[$name] as $hook) {
-			if ($hook['accepted_args'] == 0) {
-				$data = call_user_func_array($hook['function'], []);
+		$num_args = count( $args );
+		foreach ( $hooks[$name] as $hook ) {
+			$args[0] = $data;
+			if ( $hook['accepted_args'] == 0 ) {
+				$data = call_user_func_array( $hook['function'], [] );
 			}
-			elseif ($hook['accepted_args'] >= $num_args) {
-				$data = call_user_func_array($hook['function'], $args);
+			elseif ( $hook['accepted_args'] >= $num_args ) {
+				$data = call_user_func_array( $hook['function'], $args );
 			}
 			else {
-				$data = call_user_func_array(
-					$hook['function'],
-					array_slice($args, 0, (int)$hook['accepted_args'])
-				);
+				$data = call_user_func_array( $hook['function'], array_slice( $args, 0, (int) $hook['accepted_args'] ) );
 			}
 		}
 	}
@@ -102,34 +99,34 @@ function apply_filters($name, $data) {
  *
  * @return mixed Action output
  */
-function do_action($name) {
+function do_action( $name ) {
 	$args = func_get_args();
-	if (count($args) == 1) {
+	if ( count( $args ) == 1 ) {
 		$args[] = '';
 	}
-	return call_user_func_array('apply_filters', $args);
+	return call_user_func_array( 'apply_filters', $args );
 }
 
 /**
  * Remove filter by hook name and function
  *
- * @param string $name Hook name
+ * @param string $name     Hook name
  * @param string $function Function name for hook
  *
  * @return bool Result
  */
-function remove_filter($name, $function) {
+function remove_filter( $name, $function ) {
 	$result = false;
 	global $hooks;
-	if (isset($hooks[$name])) {
-		foreach ($hooks[$name] as $k=>$hook_item) {
-			if ($hook_item['function'] == $function) {
-				unset($hooks[$name][$k]);
+	if ( isset( $hooks[$name] ) ) {
+		foreach ( $hooks[$name] as $k => $hook_item ) {
+			if ( $hook_item['function'] == $function ) {
+				unset( $hooks[$name][$k] );
 				$result = true;
 			}
 		}
-		if (count($hooks[$name]) == 0) {
-			unset($hooks[$name]);
+		if ( count( $hooks[$name] ) == 0 ) {
+			unset( $hooks[$name] );
 		}
 	}
 	return $result;
@@ -138,11 +135,11 @@ function remove_filter($name, $function) {
 /**
  * Remove action by hook name and function
  *
- * @param string $name Hook name
+ * @param string $name     Hook name
  * @param string $function Function name for hook
  *
  * @return bool Result
  */
-function remove_action($name, $function) {
-	return remove_filter($name, $function);
+function remove_action( $name, $function ) {
+	return remove_filter( $name, $function );
 }