php_version = $php_version; $this->limit = $limit; $this->provide_object = $provide_object; $this->ignore_args = $ignore_args; $this->debug_backtrace_function = $debug_backtrace_function; } public function is_function_in_call_stack( $function_name, $refresh = true ) { if ( empty( $this->debug_backtrace ) || $refresh ) { $this->get_backtrace(); } $found = false; foreach ( $this->debug_backtrace as $debug_backtrace ) { if ( $debug_backtrace['function'] == $function_name && ! isset( $debug_backtrace['class'] ) ) { $found = true; break; } } return $found; } public function is_class_function_in_call_stack( $class_name, $function_name, $refresh = true ) { if ( empty( $this->debug_backtrace ) || $refresh ) { $this->get_backtrace(); } $found = false; foreach ( $this->debug_backtrace as $debug_backtrace ) { if ( isset( $debug_backtrace['class'] ) && $debug_backtrace['class'] == $class_name && $debug_backtrace['function'] == $function_name ) { $found = true; break; } } return $found; } public function get_backtrace() { $options = false; if ( version_compare( $this->php_version, '5.3.6' ) < 0 ) { // Before 5.3.6, the only values recognized are TRUE or FALSE, // which are the same as setting or not setting the DEBUG_BACKTRACE_PROVIDE_OBJECT option respectively. $options = $this->provide_object; } else { // As of 5.3.6, 'options' parameter is a bitmask for the following options: if ( $this->provide_object ) { $options |= DEBUG_BACKTRACE_PROVIDE_OBJECT; } if ( $this->ignore_args ) { $options |= DEBUG_BACKTRACE_IGNORE_ARGS; } } if ( version_compare( $this->php_version, '5.4.0' ) >= 0 ) { $actual_limit = $this->limit == 0 ? 0 : $this->limit + 3; $this->debug_backtrace = (array) call_user_func_array( $this->debug_backtrace_function, array( $options, $actual_limit ) ); //add one item to include the current frame } elseif ( version_compare( $this->php_version, '5.2.4' ) >= 0 ) { //@link https://core.trac.wordpress.org/ticket/20953 $this->debug_backtrace = (array) call_user_func_array( $this->debug_backtrace_function, array() ); } else { $this->debug_backtrace = (array) call_user_func_array( $this->debug_backtrace_function, array( $options ) ); } $this->remove_frames_for_this_class(); return $this->debug_backtrace; } private function remove_frames_for_this_class() { for ( $i = 0; $i < 3; $i ++ ) { $this->remove_last_frame(); } } public function remove_last_frame() { if ( $this->debug_backtrace ) { array_shift( $this->debug_backtrace ); } } }