• Resolved igwordpress

    (@igwordpress)


    We are planning to use Charitable Payumoney plugin in our website:

    Below is the error we are getting after activating the plugin.

    Warning: call_user_func_array() expects parameter 1 to be a valid callback, class ‘Charitable_PayU_Money_i18n’ does not have a method ‘charitable_start’ in /home/directn3/public_html/wp-includes/class-wp-hook.php on line 286

    Attaching the script class-wp-hook.php

    <?php
    /**
     * Plugin API: WP_Hook class
     *
     * @package WordPress
     * @subpackage Plugin
     * @since 4.7.0
     */
    
    /**
     * Core class used to implement action and filter hook functionality.
     *
     * @since 4.7.0
     *
     * @see Iterator
     * @see ArrayAccess
     */
    final class WP_Hook implements Iterator, ArrayAccess {
    
    	/**
    	 * Hook callbacks.
    	 *
    	 * @since 4.7.0
    	 * @var array
    	 */
    	public $callbacks = array();
    
    	/**
    	 * The priority keys of actively running iterations of a hook.
    	 *
    	 * @since 4.7.0
    	 * @var array
    	 */
    	private $iterations = array();
    
    	/**
    	 * The current priority of actively running iterations of a hook.
    	 *
    	 * @since 4.7.0
    	 * @var array
    	 */
    	private $current_priority = array();
    
    	/**
    	 * Number of levels this hook can be recursively called.
    	 *
    	 * @since 4.7.0
    	 * @var int
    	 */
    	private $nesting_level = 0;
    
    	/**
    	 * Flag for if we're current doing an action, rather than a filter.
    	 *
    	 * @since 4.7.0
    	 * @var bool
    	 */
    	private $doing_action = false;
    
    	/**
    	 * Hooks a function or method to a specific filter action.
    	 *
    	 * @since 4.7.0
    	 *
    	 * @param string   $tag             The name of the filter to hook the $function_to_add callback to.
    	 * @param callable $function_to_add The callback to be run when the filter is applied.
    	 * @param int      $priority        The order in which the functions associated with a
    	 *                                  particular action are executed. Lower numbers correspond with
    	 *                                  earlier execution, and functions with the same priority are executed
    	 *                                  in the order in which they were added to the action.
    	 * @param int      $accepted_args   The number of arguments the function accepts.
    	 */
    	public function add_filter( $tag, $function_to_add, $priority, $accepted_args ) {
    		$idx = _wp_filter_build_unique_id( $tag, $function_to_add, $priority );
    		$priority_existed = isset( $this->callbacks[ $priority ] );
    
    		$this->callbacks[ $priority ][ $idx ] = array(
    			'function' => $function_to_add,
    			'accepted_args' => $accepted_args
    		);
    
    		// if we're adding a new priority to the list, put them back in sorted order
    		if ( ! $priority_existed && count( $this->callbacks ) > 1 ) {
    			ksort( $this->callbacks, SORT_NUMERIC );
    		}
    
    		if ( $this->nesting_level > 0 ) {
    			$this->resort_active_iterations( $priority, $priority_existed );
    		}
    	}
    
    	/**
    	 * Handles reseting callback priority keys mid-iteration.
    	 *
    	 * @since 4.7.0
    	 *
    	 * @param bool|int $new_priority     Optional. The priority of the new filter being added. Default false,
    	 *                                   for no priority being added.
    	 * @param bool     $priority_existed Optional. Flag for whether the priority already existed before the new
    	 *                                   filter was added. Default false.
    	 */
    	private function resort_active_iterations( $new_priority = false, $priority_existed = false ) {
    		$new_priorities = array_keys( $this->callbacks );
    
    		// If there are no remaining hooks, clear out all running iterations.
    		if ( ! $new_priorities ) {
    			foreach ( $this->iterations as $index => $iteration ) {
    				$this->iterations[ $index ] = $new_priorities;
    			}
    			return;
    		}
    
    		$min = min( $new_priorities );
    		foreach ( $this->iterations as $index => &$iteration ) {
    			$current = current( $iteration );
    			// If we're already at the end of this iteration, just leave the array pointer where it is.
    			if ( false === $current ) {
    				continue;
    			}
    
    			$iteration = $new_priorities;
    
    			if ( $current < $min ) {
    				array_unshift( $iteration, $current );
    				continue;
    			}
    
    			while ( current( $iteration ) < $current ) {
    				if ( false === next( $iteration ) ) {
    					break;
    				}
    			}
    
    			// If we have a new priority that didn't exist, but ::apply_filters() or ::do_action() thinks it's the current priority...
    			if ( $new_priority === $this->current_priority[ $index ] && ! $priority_existed ) {
    				/*
    				 * ... and the new priority is the same as what $this->iterations thinks is the previous
    				 * priority, we need to move back to it.
    				 */
    
    				if ( false === current( $iteration ) ) {
    					// If we've already moved off the end of the array, go back to the last element.
    					$prev = end( $iteration );
    				} else {
    					// Otherwise, just go back to the previous element.
    					$prev = prev( $iteration );
    				}
    				if ( false === $prev ) {
    					// Start of the array. Reset, and go about our day.
    					reset( $iteration );
    				} elseif ( $new_priority !== $prev ) {
    					// Previous wasn't the same. Move forward again.
    					next( $iteration );
    				}
    			}
    		}
    		unset( $iteration );
    	}
    
    	/**
    	 * Unhooks a function or method from a specific filter action.
    	 *
    	 * @since 4.7.0
    	 *
    	 * @param string   $tag                The filter hook to which the function to be removed is hooked. Used
    	 *                                     for building the callback ID when SPL is not available.
    	 * @param callable $function_to_remove The callback to be removed from running when the filter is applied.
    	 * @param int      $priority           The exact priority used when adding the original filter callback.
    	 * @return bool Whether the callback existed before it was removed.
    	 */
    	public function remove_filter( $tag, $function_to_remove, $priority ) {
    		$function_key = _wp_filter_build_unique_id( $tag, $function_to_remove, $priority );
    
    		$exists = isset( $this->callbacks[ $priority ][ $function_key ] );
    		if ( $exists ) {
    			unset( $this->callbacks[ $priority ][ $function_key ] );
    			if ( ! $this->callbacks[ $priority ] ) {
    				unset( $this->callbacks[ $priority ] );
    				if ( $this->nesting_level > 0 ) {
    					$this->resort_active_iterations();
    				}
    			}
    		}
    		return $exists;
    	}
    
    	/**
    	 * Checks if a specific action has been registered for this hook.
    	 *
    	 * @since 4.7.0
    	 *
    	 * @param string        $tag               Optional. The name of the filter hook. Used for building
    	 *                                         the callback ID when SPL is not available. Default empty.
    	 * @param callable|bool $function_to_check Optional. The callback to check for. Default false.
    	 * @return bool|int The priority of that hook is returned, or false if the function is not attached.
    	 */
    	public function has_filter( $tag = '', $function_to_check = false ) {
    		if ( false === $function_to_check ) {
    			return $this->has_filters();
    		}
    
    		$function_key = _wp_filter_build_unique_id( $tag, $function_to_check, false );
    		if ( ! $function_key ) {
    			return false;
    		}
    
    		foreach ( $this->callbacks as $priority => $callbacks ) {
    			if ( isset( $callbacks[ $function_key ] ) ) {
    				return $priority;
    			}
    		}
    
    		return false;
    	}
    
    	/**
    	 * Checks if any callbacks have been registered for this hook.
    	 *
    	 * @since 4.7.0
    	 *
    	 * @return bool True if callbacks have been registered for the current hook, otherwise false.
    	 */
    	public function has_filters() {
    		foreach ( $this->callbacks as $callbacks ) {
    			if ( $callbacks ) {
    				return true;
    			}
    		}
    		return false;
    	}
    
    	/**
    	 * Removes all callbacks from the current filter.
    	 *
    	 * @since 4.7.0
    	 *
    	 * @param int|bool $priority Optional. The priority number to remove. Default false.
    	 */
    	public function remove_all_filters( $priority = false ) {
    		if ( ! $this->callbacks ) {
    			return;
    		}
    
    		if ( false === $priority ) {
    			$this->callbacks = array();
    		} else if ( isset( $this->callbacks[ $priority ] ) ) {
    			unset( $this->callbacks[ $priority ] );
    		}
    
    		if ( $this->nesting_level > 0 ) {
    			$this->resort_active_iterations();
    		}
    	}
    
    	/**
    	 * Calls the callback functions added to a filter hook.
    	 *
    	 * @since 4.7.0
    	 *
    	 * @param mixed $value The value to filter.
    	 * @param array $args  Arguments to pass to callbacks.
    	 * @return mixed The filtered value after all hooked functions are applied to it.
    	 */
    	public function apply_filters( $value, $args ) {
    		if ( ! $this->callbacks ) {
    			return $value;
    		}
    
    		$nesting_level = $this->nesting_level++;
    
    		$this->iterations[ $nesting_level ] = array_keys( $this->callbacks );
    		$num_args = count( $args );
    
    		do {
    			$this->current_priority[ $nesting_level ] = $priority = current( $this->iterations[ $nesting_level ] );
    
    			foreach ( $this->callbacks[ $priority ] as $the_ ) {
    				if( ! $this->doing_action ) {
    					$args[ 0 ] = $value;
    				}
    
    				// Avoid the array_slice if possible.
    				if ( $the_['accepted_args'] == 0 ) {
    					$value = call_user_func_array( $the_['function'], array() );
    				} elseif ( $the_['accepted_args'] >= $num_args ) {
    					$value = call_user_func_array( $the_['function'], $args );
    				} else {
    					$value = call_user_func_array( $the_['function'], array_slice( $args, 0, (int)$the_['accepted_args'] ) );
    				}
    			}
    		} while ( false !== next( $this->iterations[ $nesting_level ] ) );
    
    		unset( $this->iterations[ $nesting_level ] );
    		unset( $this->current_priority[ $nesting_level ] );
    
    		$this->nesting_level--;
    
    		return $value;
    	}
    
    	/**
    	 * Executes the callback functions hooked on a specific action hook.
    	 *
    	 * @since 4.7.0
    	 *
    	 * @param mixed $args Arguments to pass to the hook callbacks.
    	 */
    	public function do_action( $args ) {
    		$this->doing_action = true;
    		$this->apply_filters( '', $args );
    
    		// If there are recursive calls to the current action, we haven't finished it until we get to the last one.
    		if ( ! $this->nesting_level ) {
    			$this->doing_action = false;
    		}
    	}
    
    	/**
    	 * Processes the functions hooked into the 'all' hook.
    	 *
    	 * @since 4.7.0
    	 *
    	 * @param array $args Arguments to pass to the hook callbacks. Passed by reference.
    	 */
    	public function do_all_hook( &$args ) {
    		$nesting_level = $this->nesting_level++;
    		$this->iterations[ $nesting_level ] = array_keys( $this->callbacks );
    
    		do {
    			$priority = current( $this->iterations[ $nesting_level ] );
    			foreach ( $this->callbacks[ $priority ] as $the_ ) {
    				call_user_func_array( $the_['function'], $args );
    			}
    		} while ( false !== next( $this->iterations[ $nesting_level ] ) );
    
    		unset( $this->iterations[ $nesting_level ] );
    		$this->nesting_level--;
    	}
    
    	/**
    	 * Return the current priority level of the currently running iteration of the hook.
    	 *
    	 * @since 4.7.0
    	 *
    	 * @return int|false If the hook is running, return the current priority level. If it isn't running, return false.
    	 */
    	public function current_priority() {
    		if ( false === current( $this->iterations ) ) {
    			return false;
    		}
    
    		return current( current( $this->iterations ) );
    	}
    
    	/**
    	 * Normalizes filters set up before WordPress has initialized to WP_Hook objects.
    	 *
    	 * @since 4.7.0
    	 * @static
    	 *
    	 * @param array $filters Filters to normalize.
    	 * @return WP_Hook[] Array of normalized filters.
    	 */
    	public static function build_preinitialized_hooks( $filters ) {
    		/** @var WP_Hook[] $normalized */
    		$normalized = array();
    
    		foreach ( $filters as $tag => $callback_groups ) {
    			if ( is_object( $callback_groups ) && $callback_groups instanceof WP_Hook ) {
    				$normalized[ $tag ] = $callback_groups;
    				continue;
    			}
    			$hook = new WP_Hook();
    
    			// Loop through callback groups.
    			foreach ( $callback_groups as $priority => $callbacks ) {
    
    				// Loop through callbacks.
    				foreach ( $callbacks as $cb ) {
    					$hook->add_filter( $tag, $cb['function'], $priority, $cb['accepted_args'] );
    				}
    			}
    			$normalized[ $tag ] = $hook;
    		}
    		return $normalized;
    	}
    
    	/**
    	 * Determines whether an offset value exists.
    	 *
    	 * @since 4.7.0
    	 *
    	 * @link https://secure.php.net/manual/en/arrayaccess.offsetexists.php
    	 *
    	 * @param mixed $offset An offset to check for.
    	 * @return bool True if the offset exists, false otherwise.
    	 */
    	public function offsetExists( $offset ) {
    		return isset( $this->callbacks[ $offset ] );
    	}
    
    	/**
    	 * Retrieves a value at a specified offset.
    	 *
    	 * @since 4.7.0
    	 *
    	 * @link https://secure.php.net/manual/en/arrayaccess.offsetget.php
    	 *
    	 * @param mixed $offset The offset to retrieve.
    	 * @return mixed If set, the value at the specified offset, null otherwise.
    	 */
    	public function offsetGet( $offset ) {
    		return isset( $this->callbacks[ $offset ] ) ? $this->callbacks[ $offset ] : null;
    	}
    
    	/**
    	 * Sets a value at a specified offset.
    	 *
    	 * @since 4.7.0
    	 *
    	 * @link https://secure.php.net/manual/en/arrayaccess.offsetset.php
    	 *
    	 * @param mixed $offset The offset to assign the value to.
    	 * @param mixed $value The value to set.
    	 */
    	public function offsetSet( $offset, $value ) {
    		if ( is_null( $offset ) ) {
    			$this->callbacks[] = $value;
    		} else {
    			$this->callbacks[ $offset ] = $value;
    		}
    	}
    
    	/**
    	 * Unsets a specified offset.
    	 *
    	 * @since 4.7.0
    	 *
    	 * @link https://secure.php.net/manual/en/arrayaccess.offsetunset.php
    	 *
    	 * @param mixed $offset The offset to unset.
    	 */
    	public function offsetUnset( $offset ) {
    		unset( $this->callbacks[ $offset ] );
    	}
    
    	/**
    	 * Returns the current element.
    	 *
    	 * @since 4.7.0
    	 *
    	 * @link https://secure.php.net/manual/en/iterator.current.php
    	 *
    	 * @return array Of callbacks at current priority.
    	 */
    	public function current() {
    		return current( $this->callbacks );
    	}
    
    	/**
    	 * Moves forward to the next element.
    	 *
    	 * @since 4.7.0
    	 *
    	 * @link https://secure.php.net/manual/en/iterator.next.php
    	 *
    	 * @return array Of callbacks at next priority.
    	 */
    	public function next() {
    		return next( $this->callbacks );
    	}
    
    	/**
    	 * Returns the key of the current element.
    	 *
    	 * @since 4.7.0
    	 *
    	 * @link https://secure.php.net/manual/en/iterator.key.php
    	 *
    	 * @return mixed Returns current priority on success, or NULL on failure
    	 */
    	public function key() {
    		return key( $this->callbacks );
    	}
    
    	/**
    	 * Checks if current position is valid.
    	 *
    	 * @since 4.7.0
    	 *
    	 * @link https://secure.php.net/manual/en/iterator.valid.php
    	 *
    	 * @return boolean
    	 */
    	public function valid() {
    		return key( $this->callbacks ) !== null;
    	}
    
    	/**
    	 * Rewinds the Iterator to the first element.
    	 *
    	 * @since 4.7.0
    	 *
    	 * @link https://secure.php.net/manual/en/iterator.rewind.php
    	 */
    	public function rewind() {
    		reset( $this->callbacks );
    	}
    
    }
    

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Viewing 3 replies - 1 through 3 (of 3 total)

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