Code Modernization: Replace strftime() and gmstrftime() usage in unit tests.

Since PHP 8.1, the `strftime()` and `gmstrftime()` functions are deprecated: > The `strftime()` and `gmstrftime()` functions exhibit similar issues as `strptime()`, in that the formats they support, as well as their behavior, is platform-dependent. Unlike `strptime()`, these functions are available on Windows, though with a different feature set than on Linux. Musl-based distributions like Alpine do not support timezone-related format specifiers correctly. These functions are also locale-based, and as such may exhibit thread-safety issues. > > `date()` or `DateTime::format()` provide portable alternatives, and `IntlDateFormatter::format()` provides a more sophisticated, localization-aware alternative. Reference: [https://wiki.php.net/rfc/deprecations_php_8_1#strftime_and_gmstrftime PHP RFC: Deprecations for PHP 8.1: strftime() and gmstrftime()] > The `strftime()` and `gmstrftime()` functions have been deprecated in favor of > `date()/DateTime::format()` (for locale-independent formatting) or > `IntlDateFormatter::format()` (for locale-dependent formatting). Reference: [1cf4fb739f/UPGRADING (L379-L381) PHP 8.1 Upgrade Notes]. Aside from one instance in SimplePie, the `strftime()` and `gmstrftime()` functions are only used within the test suite of WordPress to create formatted timestamps. As the function is used in test code, this leads to test warnings like this on PHP 8.1: {{{ Deprecated: Function strftime() is deprecated in path/to/tests/phpunit/tests/canonical/postStatus.php on line 37 }}} These calls can all be safely converted to use a pattern along the lines of: {{{#!php <?php date_format( date_create( 'time phrase or timestamp' ), $format ) }}} Other references: * [https://www.php.net/manual/en/function.strftime.php PHP Manual: strftime()] (for the old format string characters) * [https://www.php.net/manual/en/datetime.format.php PHP Manual: DateTime::format()] (for the new format string characters) * [https://www.php.net/manual/en/datetime.construct.php PHP Manual: DateTime::__construct()] (see Example 2 for a Unix timestamp code sample) Props jrf, SergeyBiryukov. Fixes #53897. git-svn-id: https://develop.svn.wordpress.org/trunk@51587 602fd350-edb4-49c9-b593-d223f7449a82
2026-06-28 14:20:15 +00:00 · 2021-08-09 19:08:09 +00:00
parent fff4242f1a
commit b9351465d6
21 changed files with 53 additions and 51 deletions
--- a/tests/phpunit/tests/canonical/postStatus.php
+++ b/tests/phpunit/tests/canonical/postStatus.php
@@ -34,7 +34,7 @@ class Tests_Canonical_PostStatus extends WP_Canonical_UnitTestCase {
 		foreach ( $post_statuses as $post_status ) {
 			$post_date = '';
 			if ( 'future' === $post_status ) {
-				$post_date = strftime( '%Y-%m-%d %H:%M:%S', strtotime( '+1 year' ) );
+				$post_date = date_format( date_create( '+1 year' ), 'Y-m-d H:i:s' );
 			}

 			self::$posts[ $post_status ] = $factory->post->create_and_get(
--- a/tests/phpunit/tests/comment.php
+++ b/tests/phpunit/tests/comment.php
@@ -857,8 +857,8 @@ class Tests_Comment extends WP_UnitTestCase {
 		// Close comments more than one day old.
 		update_option( 'close_comments_days_old', 1 );

-		$old_date    = strtotime( '-25 hours' );
-		$old_post_id = self::factory()->post->create( array( 'post_date' => strftime( '%Y-%m-%d %H:%M:%S', $old_date ) ) );
+		$old_date    = date_create( '-25 hours' );
+		$old_post_id = self::factory()->post->create( array( 'post_date' => date_format( $old_date, 'Y-m-d H:i:s' ) ) );

 		$old_post_comment_status = _close_comments_for_old_post( true, $old_post_id );
 		$this->assertFalse( $old_post_comment_status );
--- a/tests/phpunit/tests/link.php
+++ b/tests/phpunit/tests/link.php
@@ -108,7 +108,7 @@ class Tests_Link extends WP_UnitTestCase {
 		$p = self::factory()->post->create(
 			array(
 				'post_status' => 'publish',
-				'post_date'   => strftime( '%Y-%m-%d %H:%M:%S', strtotime( '+1 day' ) ),
+				'post_date'   => date_format( date_create( '+1 day' ), 'Y-m-d H:i:s' ),
 			)
 		);

@@ -131,7 +131,7 @@ class Tests_Link extends WP_UnitTestCase {
 			array(
 				'post_status' => 'future',
 				'post_type'   => 'wptests_pt',
-				'post_date'   => strftime( '%Y-%m-%d %H:%M:%S', strtotime( '+1 day' ) ),
+				'post_date'   => date_format( date_create( '+1 day' ), 'Y-m-d H:i:s' ),
 			)
 		);

--- a/tests/phpunit/tests/media.php
+++ b/tests/phpunit/tests/media.php
@@ -21,7 +21,7 @@ class Tests_Media extends WP_UnitTestCase {
 		foreach ( $post_statuses as $post_status ) {
 			$date = '';
 			if ( 'future' === $post_status ) {
-				strftime( '%Y-%m-%d %H:%M:%S', strtotime( '+1 year' ) );
+				date_format( date_create( '+1 year' ), 'Y-m-d H:i:s' );
 			}

 			self::$post_ids[ $post_status ] = $factory->post->create(
--- a/tests/phpunit/tests/multisite/ms-files-rewriting.php
+++ b/tests/phpunit/tests/multisite/ms-files-rewriting.php
@@ -35,21 +35,22 @@ if ( is_multisite() ) :
 			$this->assertTrue( is_main_site() );

 			$site = get_current_site();
+			$date = date_format( date_create( 'now' ), 'Y/m' );

 			$user_id  = self::factory()->user->create( array( 'role' => 'administrator' ) );
 			$blog_id2 = self::factory()->blog->create( array( 'user_id' => $user_id ) );
 			$info     = wp_upload_dir();
-			$this->assertSame( 'http://' . $site->domain . '/wp-content/uploads/' . gmstrftime( '%Y/%m' ), $info['url'] );
-			$this->assertSame( ABSPATH . 'wp-content/uploads/' . gmstrftime( '%Y/%m' ), $info['path'] );
-			$this->assertSame( gmstrftime( '/%Y/%m' ), $info['subdir'] );
+			$this->assertSame( 'http://' . $site->domain . '/wp-content/uploads/' . $date, $info['url'] );
+			$this->assertSame( ABSPATH . 'wp-content/uploads/' . $date, $info['path'] );
+			$this->assertSame( '/' . $date, $info['subdir'] );
 			$this->assertFalse( $info['error'] );

 			switch_to_blog( $blog_id2 );
 			$info2 = wp_upload_dir();
 			$this->assertNotEquals( $info, $info2 );
-			$this->assertSame( get_option( 'siteurl' ) . '/wp-content/blogs.dir/' . get_current_blog_id() . '/files/' . gmstrftime( '%Y/%m' ), $info2['url'] );
-			$this->assertSame( ABSPATH . 'wp-content/blogs.dir/' . get_current_blog_id() . '/files/' . gmstrftime( '%Y/%m' ), $info2['path'] );
-			$this->assertSame( gmstrftime( '/%Y/%m' ), $info2['subdir'] );
+			$this->assertSame( get_option( 'siteurl' ) . '/wp-content/blogs.dir/' . get_current_blog_id() . '/files/' . $date, $info2['url'] );
+			$this->assertSame( ABSPATH . 'wp-content/blogs.dir/' . get_current_blog_id() . '/files/' . $date, $info2['path'] );
+			$this->assertSame( '/' . $date, $info2['subdir'] );
 			$this->assertFalse( $info2['error'] );
 			restore_current_blog();
 		}
--- a/tests/phpunit/tests/multisite/site.php
+++ b/tests/phpunit/tests/multisite/site.php
@@ -838,27 +838,28 @@ if ( is_multisite() ) :
 			$this->assertTrue( is_main_site() );

 			$site = get_current_site();
+			$date = date_format( date_create( 'now' ), 'Y/m' );

 			$info = wp_upload_dir();
-			$this->assertSame( 'http://' . $site->domain . '/wp-content/uploads/' . gmstrftime( '%Y/%m' ), $info['url'] );
-			$this->assertSame( ABSPATH . 'wp-content/uploads/' . gmstrftime( '%Y/%m' ), $info['path'] );
-			$this->assertSame( gmstrftime( '/%Y/%m' ), $info['subdir'] );
+			$this->assertSame( 'http://' . $site->domain . '/wp-content/uploads/' . $date, $info['url'] );
+			$this->assertSame( ABSPATH . 'wp-content/uploads/' . $date, $info['path'] );
+			$this->assertSame( '/' . $date, $info['subdir'] );
 			$this->assertFalse( $info['error'] );

 			$blog_id = self::factory()->blog->create();

 			switch_to_blog( $blog_id );
 			$info = wp_upload_dir();
-			$this->assertSame( 'http://' . $site->domain . '/wp-content/uploads/sites/' . get_current_blog_id() . '/' . gmstrftime( '%Y/%m' ), $info['url'] );
-			$this->assertSame( ABSPATH . 'wp-content/uploads/sites/' . get_current_blog_id() . '/' . gmstrftime( '%Y/%m' ), $info['path'] );
-			$this->assertSame( gmstrftime( '/%Y/%m' ), $info['subdir'] );
+			$this->assertSame( 'http://' . $site->domain . '/wp-content/uploads/sites/' . get_current_blog_id() . '/' . $date, $info['url'] );
+			$this->assertSame( ABSPATH . 'wp-content/uploads/sites/' . get_current_blog_id() . '/' . $date, $info['path'] );
+			$this->assertSame( '/' . $date, $info['subdir'] );
 			$this->assertFalse( $info['error'] );
 			restore_current_blog();

 			$info = wp_upload_dir();
-			$this->assertSame( 'http://' . $site->domain . '/wp-content/uploads/' . gmstrftime( '%Y/%m' ), $info['url'] );
-			$this->assertSame( ABSPATH . 'wp-content/uploads/' . gmstrftime( '%Y/%m' ), $info['path'] );
-			$this->assertSame( gmstrftime( '/%Y/%m' ), $info['subdir'] );
+			$this->assertSame( 'http://' . $site->domain . '/wp-content/uploads/' . $date, $info['url'] );
+			$this->assertSame( ABSPATH . 'wp-content/uploads/' . $date, $info['path'] );
+			$this->assertSame( '/' . $date, $info['subdir'] );
 			$this->assertFalse( $info['error'] );
 		}

--- a/tests/phpunit/tests/oembed/getResponseData.php
+++ b/tests/phpunit/tests/oembed/getResponseData.php
@@ -119,7 +119,7 @@ class Tests_oEmbed_Response_Data extends WP_UnitTestCase {
 		$post = self::factory()->post->create_and_get(
 			array(
 				'post_status' => 'future',
-				'post_date'   => strftime( '%Y-%m-%d %H:%M:%S', strtotime( '+1 day' ) ),
+				'post_date'   => date_format( date_create( '+1 day' ), 'Y-m-d H:i:s' ),
 			)
 		);

--- a/tests/phpunit/tests/oembed/template.php
+++ b/tests/phpunit/tests/oembed/template.php
@@ -143,7 +143,7 @@ class Tests_Embed_Template extends WP_UnitTestCase {
 				'post_content' => 'Foo Bar',
 				'post_excerpt' => 'Bar Baz',
 				'post_status'  => 'future',
-				'post_date'    => strftime( '%Y-%m-%d %H:%M:%S', strtotime( '+1 day' ) ),
+				'post_date'    => date_format( date_create( '+1 day' ), 'Y-m-d H:i:s' ),
 			)
 		);

--- a/tests/phpunit/tests/post.php
+++ b/tests/phpunit/tests/post.php
@@ -128,7 +128,7 @@ class Tests_Post extends WP_UnitTestCase {
 			'post_status'  => 'publish',
 			'post_content' => rand_str(),
 			'post_title'   => rand_str(),
-			'post_date'    => strftime( '%Y-%m-%d %H:%M:%S', $future_date ),
+			'post_date'    => date_format( date_create( "@{$future_date}" ), 'Y-m-d H:i:s' ),
 		);

 		// Insert a post and make sure the ID is OK.
@@ -164,7 +164,7 @@ class Tests_Post extends WP_UnitTestCase {
 			'post_status'  => 'publish',
 			'post_content' => rand_str(),
 			'post_title'   => rand_str(),
-			'post_date'    => strftime( '%Y-%m-%d %H:%M:%S', $future_date_1 ),
+			'post_date'    => date_format( date_create( "@{$future_date_1}" ), 'Y-m-d H:i:s' ),
 		);

 		// Insert a post and make sure the ID is OK.
@@ -182,7 +182,7 @@ class Tests_Post extends WP_UnitTestCase {
 		// Now save it again with a date further in the future.

 		$post['ID']            = $id;
-		$post['post_date']     = strftime( '%Y-%m-%d %H:%M:%S', $future_date_2 );
+		$post['post_date']     = date_format( date_create( "@{$future_date_2}" ), 'Y-m-d H:i:s' );
 		$post['post_date_gmt'] = null;
 		wp_update_post( $post );

@@ -209,7 +209,7 @@ class Tests_Post extends WP_UnitTestCase {
 			'post_status'  => 'publish',
 			'post_content' => rand_str(),
 			'post_title'   => rand_str(),
-			'post_date'    => strftime( '%Y-%m-%d %H:%M:%S', $future_date_1 ),
+			'post_date'    => date_format( date_create( "@{$future_date_1}" ), 'Y-m-d H:i:s' ),
 		);

 		// Insert a post and make sure the ID is OK.
@@ -227,7 +227,7 @@ class Tests_Post extends WP_UnitTestCase {
 		// Now save it again with a date further in the future.

 		$post['ID']            = $id;
-		$post['post_date']     = strftime( '%Y-%m-%d %H:%M:%S', $future_date_2 );
+		$post['post_date']     = date_format( date_create( "@{$future_date_2}" ), 'Y-m-d H:i:s' );
 		$post['post_date_gmt'] = null;
 		wp_update_post( $post );

@@ -251,7 +251,7 @@ class Tests_Post extends WP_UnitTestCase {
 			'post_status'  => 'draft',
 			'post_content' => rand_str(),
 			'post_title'   => rand_str(),
-			'post_date'    => strftime( '%Y-%m-%d %H:%M:%S', $future_date ),
+			'post_date'    => date_format( date_create( "@{$future_date}" ), 'Y-m-d H:i:s' ),
 		);

 		// Insert a post and make sure the ID is OK.
@@ -286,7 +286,7 @@ class Tests_Post extends WP_UnitTestCase {
 			'post_status'  => 'publish',
 			'post_content' => rand_str(),
 			'post_title'   => rand_str(),
-			'post_date'    => strftime( '%Y-%m-%d %H:%M:%S', $future_date_1 ),
+			'post_date'    => date_format( date_create( "@{$future_date_1}" ), 'Y-m-d H:i:s' ),
 		);

 		// Insert a post and make sure the ID is OK.
@@ -330,7 +330,7 @@ class Tests_Post extends WP_UnitTestCase {
 				'post_status'  => 'publish',
 				'post_content' => rand_str(),
 				'post_title'   => rand_str(),
-				'post_date'    => strftime( '%Y-%m-%d %H:%M:%S', $future_date_1 ),
+				'post_date'    => date_format( date_create( "@{$future_date_1}" ), 'Y-m-d H:i:s' ),
 			);

 			// Insert a post and make sure the ID is OK.
@@ -372,7 +372,7 @@ class Tests_Post extends WP_UnitTestCase {
 			'post_status'  => 'private',
 			'post_content' => rand_str(),
 			'post_title'   => rand_str(),
-			'post_date'    => strftime( '%Y-%m-%d %H:%M:%S', $future_date ),
+			'post_date'    => date_format( date_create( "@{$future_date}" ), 'Y-m-d H:i:s' ),
 		);

 		// Insert a post and make sure the ID is OK.
@@ -429,7 +429,7 @@ class Tests_Post extends WP_UnitTestCase {
 			'post_status'  => 'publish',
 			'post_content' => rand_str(),
 			'post_title'   => rand_str(),
-			'post_date'    => strftime( '%Y-%m-%d %H:%M:%S', $future_date_1 ),
+			'post_date'    => date_format( date_create( "@{$future_date_1}" ), 'Y-m-d H:i:s' ),
 		);

 		// Insert a post and make sure the ID is OK.
@@ -535,7 +535,7 @@ class Tests_Post extends WP_UnitTestCase {
 			'post_status'  => 'publish',
 			'post_content' => rand_str(),
 			'post_title'   => rand_str(),
-			'post_date'    => strftime( '%Y-%m-%d %H:%M:%S', $future_date ),
+			'post_date'    => date_format( date_create( "@{$future_date}" ), 'Y-m-d H:i:s' ),
 		);

 		// Insert a post and make sure the ID is OK.
--- a/tests/phpunit/tests/post/getPostStatus.php
+++ b/tests/phpunit/tests/post/getPostStatus.php
@@ -21,7 +21,7 @@ class Tests_Post_GetPostStatus extends WP_UnitTestCase {
 			$date          = '';
 			$actual_status = $post_status;
 			if ( 'future' === $post_status ) {
-				$date = strftime( '%Y-%m-%d %H:%M:%S', strtotime( '+1 year' ) );
+				$date = date_format( date_create( '+1 year' ), 'Y-m-d H:i:s' );
 			} elseif ( in_array( $post_status, array( 'trash', 'delete' ), true ) ) {
 				$actual_status = 'publish';
 			}
--- a/tests/phpunit/tests/post/isPostPubliclyViewable.php
+++ b/tests/phpunit/tests/post/isPostPubliclyViewable.php
@@ -18,7 +18,7 @@ class Tests_Post_IsPostPubliclyViewable extends WP_UnitTestCase {
 			$date          = '';
 			$actual_status = $post_status;
 			if ( 'future' === $post_status ) {
-				$date = strftime( '%Y-%m-%d %H:%M:%S', strtotime( '+1 year' ) );
+				$date = date_format( date_create( '+1 year' ), 'Y-m-d H:i:s' );
 			} elseif ( in_array( $post_status, array( 'trash', 'delete' ), true ) ) {
 				$actual_status = 'publish';
 			}
@@ -51,7 +51,7 @@ class Tests_Post_IsPostPubliclyViewable extends WP_UnitTestCase {
 	public function test_is_post_publicly_viewable( $post_type, $post_status, $expected, $parent_key = '' ) {
 		$date = '';
 		if ( 'future' === $post_status ) {
-			$date = strftime( '%Y-%m-%d %H:%M:%S', strtotime( '+1 year' ) );
+			$date = date_format( date_create( '+1 year' ), 'Y-m-d H:i:s' );
 		}

 		$post_id = $this->factory()->post->create(
--- a/tests/phpunit/tests/upload.php
+++ b/tests/phpunit/tests/upload.php
@@ -22,7 +22,7 @@ class Tests_Upload extends WP_UnitTestCase {
 	function test_upload_dir_default() {
 		// wp_upload_dir() with default parameters.
 		$info   = wp_upload_dir();
-		$subdir = gmstrftime( '/%Y/%m' );
+		$subdir = date_format( date_create( 'now' ), '/Y/m' );

 		$this->assertSame( get_option( 'siteurl' ) . '/wp-content/uploads' . $subdir, $info['url'] );
 		$this->assertSame( ABSPATH . 'wp-content/uploads' . $subdir, $info['path'] );
@@ -34,7 +34,7 @@ class Tests_Upload extends WP_UnitTestCase {
 		// wp_upload_dir() with a relative upload path that is not 'wp-content/uploads'.
 		update_option( 'upload_path', 'foo/bar' );
 		$info   = _wp_upload_dir();
-		$subdir = gmstrftime( '/%Y/%m' );
+		$subdir = date_format( date_create( 'now' ), '/Y/m' );

 		$this->assertSame( get_option( 'siteurl' ) . '/foo/bar' . $subdir, $info['url'] );
 		$this->assertSame( ABSPATH . 'foo/bar' . $subdir, $info['path'] );
@@ -57,7 +57,7 @@ class Tests_Upload extends WP_UnitTestCase {
 		// Use `_wp_upload_dir()` directly to bypass caching and work with the changed options.
 		// It doesn't create the /year/month directories.
 		$info   = _wp_upload_dir();
-		$subdir = gmstrftime( '/%Y/%m' );
+		$subdir = date_format( date_create( 'now' ), '/Y/m' );

 		$this->assertSame( '/baz' . $subdir, $info['url'] );
 		$this->assertSame( $path . $subdir, $info['path'] );
@@ -83,7 +83,7 @@ class Tests_Upload extends WP_UnitTestCase {
 		// Use `_wp_upload_dir()` directly to bypass caching and work with the changed options.
 		// It doesn't create the /year/month directories.
 		$info   = _wp_upload_dir();
-		$subdir = gmstrftime( '/%Y/%m' );
+		$subdir = date_format( date_create( 'now' ), '/Y/m' );

 		$this->assertSame( 'http://' . WP_TESTS_DOMAIN . '/asdf' . $subdir, $info['url'] );
 		$this->assertSame( ABSPATH . 'wp-content/uploads' . $subdir, $info['path'] );
@@ -98,7 +98,7 @@ class Tests_Upload extends WP_UnitTestCase {
 		// Use `_wp_upload_dir()` directly to bypass caching and work with the changed options.
 		// It doesn't create the /year/month directories.
 		$info   = _wp_upload_dir();
-		$subdir = gmstrftime( '/%Y/%m' );
+		$subdir = date_format( date_create( 'now' ), '/Y/m' );

 		$this->assertSame( get_option( 'siteurl' ) . '/wp-content/uploads' . $subdir, $info['url'] );
 		$this->assertSame( ABSPATH . 'wp-content/uploads' . $subdir, $info['path'] );
--- a/tests/phpunit/tests/xmlrpc/mw/editPost.php
+++ b/tests/phpunit/tests/xmlrpc/mw/editPost.php
@@ -332,7 +332,7 @@ class Tests_XMLRPC_mw_editPost extends WP_XMLRPC_UnitTestCase {
 		$after = get_post( $post_id );
 		$this->assertSame( 'future', $after->post_status );

-		$future_date_string = strftime( '%Y-%m-%d %H:%M:%S', $future_time );
+		$future_date_string = date_format( date_create( "@{$future_time}" ), 'Y-m-d H:i:s' );
 		$this->assertSame( $future_date_string, $after->post_date );
 	}
 }
--- a/tests/phpunit/tests/xmlrpc/mw/getPost.php
+++ b/tests/phpunit/tests/xmlrpc/mw/getPost.php
@@ -16,7 +16,7 @@ class Tests_XMLRPC_mw_getPost extends WP_XMLRPC_UnitTestCase {
 						'role'       => 'author',
 					)
 				),
-				'post_date'   => strftime( '%Y-%m-%d %H:%M:%S', strtotime( '+1 day' ) ),
+				'post_date'   => date_format( date_create( '+1 day' ), 'Y-m-d H:i:s' ),
 			)
 		);
 	}
--- a/tests/phpunit/tests/xmlrpc/mw/getRecentPosts.php
+++ b/tests/phpunit/tests/xmlrpc/mw/getRecentPosts.php
@@ -17,7 +17,7 @@ class Tests_XMLRPC_mw_getRecentPosts extends WP_XMLRPC_UnitTestCase {
 						'role'       => 'author',
 					)
 				),
-				'post_date'   => strftime( '%Y-%m-%d %H:%M:%S', strtotime( '+1 day' ) ),
+				'post_date'   => date_format( date_create( '+1 day' ), 'Y-m-d H:i:s' ),
 			)
 		);
 	}
--- a/tests/phpunit/tests/xmlrpc/wp/editPost.php
+++ b/tests/phpunit/tests/xmlrpc/wp/editPost.php
@@ -496,7 +496,7 @@ class Tests_XMLRPC_wp_editPost extends WP_XMLRPC_UnitTestCase {
 		$after = get_post( $post_id );
 		$this->assertSame( 'future', $after->post_status );

-		$future_date_string = strftime( '%Y-%m-%d %H:%M:%S', $future_time );
+		$future_date_string = date_format( date_create( "@{$future_time}" ), 'Y-m-d H:i:s' );
 		$this->assertSame( $future_date_string, $after->post_date );
 	}

--- a/tests/phpunit/tests/xmlrpc/wp/getPage.php
+++ b/tests/phpunit/tests/xmlrpc/wp/getPage.php
@@ -17,7 +17,7 @@ class Tests_XMLRPC_wp_getPage extends WP_XMLRPC_UnitTestCase {
 						'role'       => 'author',
 					)
 				),
-				'post_date'   => strftime( '%Y-%m-%d %H:%M:%S', strtotime( '+1 day' ) ),
+				'post_date'   => date_format( date_create( '+1 day' ), 'Y-m-d H:i:s' ),
 			)
 		);
 	}
--- a/tests/phpunit/tests/xmlrpc/wp/getPageList.php
+++ b/tests/phpunit/tests/xmlrpc/wp/getPageList.php
@@ -17,7 +17,7 @@ class Tests_XMLRPC_wp_getPageList extends WP_XMLRPC_UnitTestCase {
 						'role'       => 'author',
 					)
 				),
-				'post_date'   => strftime( '%Y-%m-%d %H:%M:%S', strtotime( '+1 day' ) ),
+				'post_date'   => date_format( date_create( '+1 day' ), 'Y-m-d H:i:s' ),
 			)
 		);
 	}
--- a/tests/phpunit/tests/xmlrpc/wp/getPages.php
+++ b/tests/phpunit/tests/xmlrpc/wp/getPages.php
@@ -18,7 +18,7 @@ class Tests_XMLRPC_wp_getPages extends WP_XMLRPC_UnitTestCase {
 						'role'       => 'administrator',
 					)
 				),
-				'post_date'   => strftime( '%Y-%m-%d %H:%M:%S', strtotime( '+1 day' ) ),
+				'post_date'   => date_format( date_create( '+1 day' ), 'Y-m-d H:i:s' ),
 			)
 		);
 		self::$editor_id = $factory->user->create(
--- a/tests/phpunit/tests/xmlrpc/wp/getPost.php
+++ b/tests/phpunit/tests/xmlrpc/wp/getPost.php
@@ -18,7 +18,7 @@ class Tests_XMLRPC_wp_getPost extends WP_XMLRPC_UnitTestCase {
 			'post_content' => rand_str( 2000 ),
 			'post_excerpt' => rand_str( 100 ),
 			'post_author'  => $this->make_user_by_role( 'author' ),
-			'post_date'    => strftime( '%Y-%m-%d %H:%M:%S', $this->post_date_ts ),
+			'post_date'    => date_format( date_create( "@{$this->post_date_ts}" ), 'Y-m-d H:i:s' ),
 		);
 		$this->post_id                 = wp_insert_post( $this->post_data );
 		$this->post_custom_field       = array(
--- a/tests/phpunit/tests/xmlrpc/wp/getUser.php
+++ b/tests/phpunit/tests/xmlrpc/wp/getUser.php
@@ -61,7 +61,7 @@ class Tests_XMLRPC_wp_getUser extends WP_XMLRPC_UnitTestCase {
 			'user_url'        => 'http://www.example.com/testuser',
 			'role'            => 'author',
 			'aim'             => 'wordpress',
-			'user_registered' => strftime( '%Y-%m-%d %H:%M:%S', $registered_date ),
+			'user_registered' => date_format( date_create( "@{$registered_date}" ), 'Y-m-d H:i:s' ),
 		);
 		$user_id         = wp_insert_user( $user_data );