Raised PHP requirement to 7.1 and updated types.

Fixes #25

src/Record/Core_Load_Collector.php

@@ -1,4 +1,5 @@
 <?php
+declare( strict_types=1 );
 
 namespace Rarst\Laps\Record;
 
@@ -20,11 +21,11 @@ class Core_Load_Collector implements Record_Collector_Interface {
 	/**
 	 * @return Record_Interface[]
 	 */
-	public function get_records() {
+	public function get_records(): array {
 
 		global $timestart;
 
-		$request_time = $_SERVER['REQUEST_TIME_FLOAT'];
+		$request_time = filter_var( $_SERVER['REQUEST_TIME_FLOAT'], FILTER_VALIDATE_FLOAT );
 
 		return [
 			new Record( 'PHP Load', $request_time, $timestart - $request_time, '', 'php' ),

src/Record/Hook_Record_Collector.php

@@ -1,4 +1,5 @@
 <?php
+declare( strict_types=1 );
 
 namespace Rarst\Laps\Record;
 
@@ -37,7 +38,7 @@ class Hook_Record_Collector extends Stopwatch_Record_Collector {
 	 *
 	 * @param array $stops Starts and stops to hook.
 	 */
-	public function add_events( $stops ) {
+	public function add_events( array $stops ): void {
 
 		$this->events = array_merge( $this->events, $stops );
 
@@ -51,7 +52,7 @@ class Hook_Record_Collector extends Stopwatch_Record_Collector {
 	/**
 	 * When theme is done possibly add vendor-specific events.
 	 */
-	public function after_setup_theme() {
+	public function after_setup_theme(): void {
 
 		foreach ( $this->event_configs as $config ) {
 			$this->add_events( $config->get_events() );
@@ -78,7 +79,7 @@ class Hook_Record_Collector extends Stopwatch_Record_Collector {
 			return $input;
 		}
 
-		$event = wp_parse_args( $this->events[ $filter_name ][ $priority ], [
+		$event = \wp_parse_args( $this->events[ $filter_name ][ $priority ], [
 			'action'   => 'start',
 			'category' => null,
 		] );
@@ -95,7 +96,7 @@ class Hook_Record_Collector extends Stopwatch_Record_Collector {
 	/**
 	 * @return Stopwatch_Record[]
 	 */
-	public function get_records() {
+	public function get_records(): array {
 
 		$this->stopwatch->stop( 'Toolbar' );
 

src/Record/Http_Record_Collector.php

@@ -1,4 +1,5 @@
 <?php
+declare( strict_types=1 );
 
 namespace Rarst\Laps\Record;
 
@@ -29,7 +30,7 @@ class Http_Record_Collector extends Stopwatch_Record_Collector {
 	 *
 	 * @return boolean
 	 */
-	public function pre_http_request( $false, $args, $url ) {
+	public function pre_http_request( bool $false, array $args, string $url ): bool {
 
 		$this->start( $url, 'http' );
 
@@ -49,7 +50,7 @@ class Http_Record_Collector extends Stopwatch_Record_Collector {
 	 *
 	 * @noinspection MoreThanThreeArgumentsInspection
 	 */
-	public function http_api_debug( $response, $type, $class, $args, $url ) {
+	public function http_api_debug( $response, string $type, $class, array $args, string $url ) {
 
 		$this->stop( $url );
 

src/Record/Record.php

@@ -1,4 +1,5 @@
 <?php
+declare( strict_types=1 );
 
 namespace Rarst\Laps\Record;
 
@@ -29,7 +30,7 @@ class Record implements Record_Interface {
 	 * @param string $description Optional description.
 	 * @param string $category    Optional category.
 	 */
-	public function __construct( $name, $origin, $duration, $description = '', $category = '' ) {
+	public function __construct( string $name, float $origin, float $duration, string $description = '', string $category = '' ) {
 		$this->name        = $name;
 		$this->origin      = $origin;
 		$this->duration    = $duration;
@@ -40,14 +41,14 @@ class Record implements Record_Interface {
 	/**
 	 * @return string
 	 */
-	public function get_name() {
+	public function get_name(): string {
 		return $this->name;
 	}
 
 	/**
 	 * @return string
 	 */
-	public function get_description() {
+	public function get_description(): string {
 
 		if ( empty( $this->description ) ) {
 			$duration = round( $this->get_duration() * 1000 );
@@ -61,21 +62,21 @@ class Record implements Record_Interface {
 	/**
 	 * @return float
 	 */
-	public function get_origin() {
+	public function get_origin(): float {
 		return $this->origin;
 	}
 
 	/**
 	 * @return float
 	 */
-	public function get_duration() {
+	public function get_duration(): float {
 		return $this->duration;
 	}
 
 	/**
 	 * @return string
 	 */
-	public function get_category() {
+	public function get_category(): string {
 		return $this->category;
 	}
 }

src/Record/Record_Collector_Interface.php

@@ -1,11 +1,15 @@
 <?php
+declare( strict_types=1 );
 
 namespace Rarst\Laps\Record;
 
+/**
+ * Interface to retrieve a set of records form collector.
+ */
 interface Record_Collector_Interface {
 
 	/**
 	 * @return Record_Interface[]
 	 */
-	public function get_records();
+	public function get_records(): array;
 }

src/Record/Record_Interface.php

@@ -1,4 +1,5 @@
 <?php
+declare( strict_types=1 );
 
 namespace Rarst\Laps\Record;
 
@@ -10,25 +11,25 @@ interface Record_Interface {
 	/**
 	 * @return string
 	 */
-	public function get_name();
+	public function get_name(): string;
 
 	/**
 	 * @return string
 	 */
-	public function get_description();
+	public function get_description(): string;
 
 	/**
 	 * @return float Timestamp of record start.
 	 */
-	public function get_origin();
+	public function get_origin(): float;
 
 	/**
 	 * @return float Record duration in seconds.
 	 */
-	public function get_duration();
+	public function get_duration(): float;
 
 	/**
 	 * @return string
 	 */
-	public function get_category();
+	public function get_category(): string;
 }

src/Record/Recursive_Record_Iterator.php

@@ -1,4 +1,5 @@
 <?php
+declare( strict_types=1 );
 
 namespace Rarst\Laps\Record;
 
@@ -14,7 +15,7 @@ class Recursive_Record_Iterator extends \ArrayIterator implements \RecursiveIter
 	 * @param Record_Interface[] $records Records to process.
 	 * @param int                $flags   Configuration flags.
 	 */
-	public function __construct( array $records, $flags = 0 ) {
+	public function __construct( array $records, int $flags = 0 ) {
 
 		usort( $records, [ $this, 'sort_origin' ] );
 		$end = 0;
@@ -43,7 +44,7 @@ class Recursive_Record_Iterator extends \ArrayIterator implements \RecursiveIter
 	 *
 	 * @return int
 	 */
-	protected function sort_origin( Record_Interface $record_a, Record_Interface $record_b ) {
+	protected function sort_origin( Record_Interface $record_a, Record_Interface $record_b ): int {
 
 		$origin_a = $record_a->get_origin();
 		$origin_b = $record_b->get_origin();
@@ -58,7 +59,7 @@ class Recursive_Record_Iterator extends \ArrayIterator implements \RecursiveIter
 	/**
 	 * @return bool
 	 */
-	public function hasChildren() {
+	public function hasChildren(): bool {
 
 		return ! empty( $this->children );
 	}

src/Record/Sql_Record_Collector.php

@@ -1,4 +1,5 @@
 <?php
+declare( strict_types=1 );
 
 namespace Rarst\Laps\Record;
 
@@ -34,7 +35,7 @@ class Sql_Record_Collector implements Record_Collector_Interface {
 	 *
 	 * @return string
 	 */
-	public function query( $query ) {
+	public function query( $query ): string {
 
 		global $wpdb;
 
@@ -50,7 +51,7 @@ class Sql_Record_Collector implements Record_Collector_Interface {
 	/**
 	 * @return Record[]
 	 */
-	public function get_records() {
+	public function get_records(): array {
 
 		if ( ! $this->is_savequeries() ) {
 			return [];
@@ -64,9 +65,9 @@ class Sql_Record_Collector implements Record_Collector_Interface {
 	/**
 	 * @return bool
 	 */
-	protected function is_savequeries() {
+	protected function is_savequeries(): bool {
 
-		return defined( 'SAVEQUERIES' ) && SAVEQUERIES;
+		return \defined( 'SAVEQUERIES' ) && SAVEQUERIES;
 	}
 
 	/**
@@ -77,13 +78,13 @@ class Sql_Record_Collector implements Record_Collector_Interface {
 	 *
 	 * @return Record
 	 */
-	protected function transform( $key, $query_data ) {
+	protected function transform( int $key, array $query_data ): Record {
 
 		static $last_query_end = 0;
 
-		list( $sql, $duration, $caller ) = $query_data;
+		[ $sql, $duration, $caller ] = $query_data;
 
-		$query_start = isset( $this->query_starts[ $key ] ) ? $this->query_starts[ $key ] : $last_query_end;
+		$query_start = $this->query_starts[ $key ] ?? $last_query_end;
 		$sql         = trim( $sql );
 		$category    = 'sql-read';
 		if ( 0 === stripos( $sql, 'INSERT' ) || 0 === stripos( $sql, 'UPDATE' ) ) {

src/Record/Stopwatch_Record.php

@@ -1,4 +1,5 @@
 <?php
+declare( strict_types=1 );
 
 namespace Rarst\Laps\Record;
 
@@ -19,7 +20,7 @@ class Stopwatch_Record implements Record_Interface {
 	 * @param string         $name            Event name.
 	 * @param StopwatchEvent $stopwatch_event Stopwatch event instance.
 	 */
-	public function __construct( $name, StopwatchEvent $stopwatch_event ) {
+	public function __construct( string $name, StopwatchEvent $stopwatch_event ) {
 		$this->name            = $name;
 		$this->stopwatch_event = $stopwatch_event;
 	}
@@ -27,14 +28,14 @@ class Stopwatch_Record implements Record_Interface {
 	/**
 	 * @return string
 	 */
-	public function get_name() {
+	public function get_name(): string {
 		return $this->name;
 	}
 
 	/**
 	 * @return string
 	 */
-	public function get_description() {
+	public function get_description(): string {
 
 		$duration = round( $this->stopwatch_event->getDuration() );
 		$memory   = $this->stopwatch_event->getMemory() / 1024 / 1024;
@@ -45,21 +46,21 @@ class Stopwatch_Record implements Record_Interface {
 	/**
 	 * @return float Timestamp of record start.
 	 */
-	public function get_origin() {
+	public function get_origin(): float {
 		return $this->stopwatch_event->getOrigin() / 1000; // ms to s.
 	}
 
 	/**
 	 * @return float Record duration in seconds.
 	 */
-	public function get_duration() {
+	public function get_duration(): float {
 		return $this->stopwatch_event->getDuration() / 1000; // ms to s.
 	}
 
 	/**
 	 * @return string
 	 */
-	public function get_category() {
+	public function get_category(): string {
 		return $this->stopwatch_event->getCategory();
 	}
 }

src/Record/Stopwatch_Record_Collector.php

@@ -1,4 +1,5 @@
 <?php
+declare( strict_types=1 );
 
 namespace Rarst\Laps\Record;
 
@@ -26,7 +27,7 @@ class Stopwatch_Record_Collector implements Record_Collector_Interface {
 	 *
 	 * @return StopwatchEvent
 	 */
-	public function start( $name, $category = null ) {
+	public function start( $name, $category = null ): StopwatchEvent {
 		return $this->stopwatch->start( $name, $category );
 	}
 
@@ -47,7 +48,7 @@ class Stopwatch_Record_Collector implements Record_Collector_Interface {
 	/**
 	 * @return Stopwatch_Record[]
 	 */
-	public function get_records() {
+	public function get_records(): array {
 
 		$events = $this->stopwatch->getSectionEvents( '__root__' );
 
@@ -66,7 +67,7 @@ class Stopwatch_Record_Collector implements Record_Collector_Interface {
 	 *
 	 * @return Stopwatch_Record
 	 */
-	protected function transform( $name, StopwatchEvent $event ) {
+	protected function transform( string $name, StopwatchEvent $event ): Stopwatch_Record {
 
 		return new Stopwatch_Record( $name, $event );
 	}

src/Record/Timeline_Iterator.php

@@ -1,4 +1,5 @@
 <?php
+declare( strict_types=1 );
 
 namespace Rarst\Laps\Record;
 
@@ -24,14 +25,14 @@ class Timeline_Iterator implements \Iterator {
 	 */
 	public function __construct( Recursive_Record_Iterator $iterator ) {
 
-		$this->origin   = $_SERVER['REQUEST_TIME_FLOAT'];
+		$this->origin   = filter_var( $_SERVER['REQUEST_TIME_FLOAT'], FILTER_VALIDATE_FLOAT );
 		$this->iterator = $iterator;
 	}
 
 	/**
 	 * @return array
 	 */
-	public function current() {
+	public function current(): array {
 
 		$data = [];
 
@@ -45,7 +46,7 @@ class Timeline_Iterator implements \Iterator {
 	/**
 	 * Sets current context to the next set of nested records.
 	 */
-	public function next() {
+	public function next(): void {
 		$this->current = $this->current->getChildren();
 	}
 
@@ -54,21 +55,21 @@ class Timeline_Iterator implements \Iterator {
 	 *
 	 * @return void
 	 */
-	public function key() {
+	public function key(): void {
 
 	}
 
 	/**
 	 * @return bool If current set contains records.
 	 */
-	public function valid() {
+	public function valid(): bool {
 		return (bool) count( $this->current );
 	}
 
 	/**
 	 * Rewind to a topmost record set.
 	 */
-	public function rewind() {
+	public function rewind(): void {
 		$this->total   = microtime( true ) - $this->origin;
 		$this->current = $this->iterator;
 	}
@@ -78,7 +79,7 @@ class Timeline_Iterator implements \Iterator {
 	 *
 	 * @return array Record data for display by the template.
 	 */
-	protected function prepare( Record_Interface $record ) {
+	protected function prepare( Record_Interface $record ): array {
 
 		$data = [
 			'description' => $record->get_description(),