From 8a62f7dc05ab73e2b26ef337da5c59effb6b9cde Mon Sep 17 00:00:00 2001
From: Sergey Biryukov <sergeybiryukov.ru@gmail.com>
Date: Thu, 10 Feb 2022 15:03:04 +0000
Subject: [PATCH] Code Modernization: Use `file_get_contents()` in
 `get_file_data()`.

`file_get_contents()` is faster than `fread()`, because the PHP core can decide how to best read the remaining file; it could decide to issue just one `read()` call or `mmap()` the file first.

Per the PHP manual, `file_get_contents()` or `stream_get_contents()` is the preferred way to read the contents of a file into a string. It will use memory mapping techniques if supported by the OS to enhance performance.

Reference: [https://www.php.net/manual/en/function.file-get-contents.php PHP Manual: file_get_contents()].

Follow-up to [12044], [49073], [52696].

Props maxkellermann.
See #55069.
Built from https://develop.svn.wordpress.org/trunk@52698


git-svn-id: http://core.svn.wordpress.org/trunk@52287 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-includes/functions.php | 12 +++---------
 wp-includes/version.php   |  2 +-
 2 files changed, 4 insertions(+), 10 deletions(-)

diff --git a/wp-includes/functions.php b/wp-includes/functions.php
index 539194642d..24cfbb7b33 100644
--- a/wp-includes/functions.php
+++ b/wp-includes/functions.php
@@ -6566,16 +6566,10 @@ function wp_scheduled_delete() {
  * @return string[] Array of file header values keyed by header name.
  */
 function get_file_data( $file, $default_headers, $context = '' ) {
-	// We don't need to write to the file, so just open for reading.
-	$fp = fopen( $file, 'r' );
+	// Pull only the first 8 KB of the file in.
+	$file_data = file_get_contents( $file, false, null, 0, 8 * KB_IN_BYTES );
 
-	if ( $fp ) {
-		// Pull only the first 8 KB of the file in.
-		$file_data = fread( $fp, 8 * KB_IN_BYTES );
-
-		// PHP will close file handle, but we are good citizens.
-		fclose( $fp );
-	} else {
+	if ( false === $file_data ) {
 		$file_data = '';
 	}
 
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 9ea4ae884f..54a3df76ed 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.0-alpha-52697';
+$wp_version = '6.0-alpha-52698';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.