Use PHP 5.6 '**' operator instead of 'pow()' function

Change-Id: Ieb22e1dbfcffaa4e7b3dcfabbcc999e5dd59a4bf

11 files changed, 27 insertions, 27 deletions

diff --git a/includes/diff/DiffEngine.php b/includes/diff/DiffEngine.php
index 273d1d61f6fc..142c51d7a0c5 100644
--- a/includes/diff/DiffEngine.php
+++ b/includes/diff/DiffEngine.php
@@ -351,7 +351,7 @@ class DiffEngine {
 			$this->maxDifferences = ceil( ( $this->m + $this->n ) / 2.0 );
 			if ( $this->m * $this->n > $this->tooLong ) {
 				// limit complexity to D^POW_LIMIT for long sequences
-				$this->maxDifferences = floor( pow( $this->maxDifferences, $this->powLimit - 1.0 ) );
+				$this->maxDifferences = floor( $this->maxDifferences ** ( $this->powLimit - 1.0 ) );
 				wfDebug( "Limiting max number of differences to $this->maxDifferences\n" );
 			}
 
diff --git a/includes/libs/IP.php b/includes/libs/IP.php
index 06589d278791..8efcd1589b4f 100644
--- a/includes/libs/IP.php
+++ b/includes/libs/IP.php
@@ -425,7 +425,7 @@ class IP {
 			$ip = self::sanitizeIP( $ip );
 			$n = ip2long( $ip );
 			if ( $n < 0 ) {
-				$n += pow( 2, 32 );
+				$n += 2 ** 32;
 				# On 32-bit platforms (and on Windows), 2^32 does not fit into an int,
 				# so $n becomes a float. We convert it to string instead.
 				if ( is_float( $n ) ) {
@@ -487,7 +487,7 @@ class IP {
 			}
 			# Convert to unsigned
 			if ( $network < 0 ) {
-				$network += pow( 2, 32 );
+				$network += 2 ** 32;
 			}
 		} else {
 			$network = false;
@@ -523,7 +523,7 @@ class IP {
 				$start = $end = false;
 			} else {
 				$start = sprintf( '%08X', $network );
-				$end = sprintf( '%08X', $network + pow( 2, ( 32 - $bits ) ) - 1 );
+				$end = sprintf( '%08X', $network + 2 ** ( 32 - $bits ) - 1 );
 			}
 		// Explicit range
 		} elseif ( strpos( $range, '-' ) !== false ) {
diff --git a/includes/libs/filebackend/FileBackendStore.php b/includes/libs/filebackend/FileBackendStore.php
index 06b263a8c6d0..16ea3ea497cc 100644
--- a/includes/libs/filebackend/FileBackendStore.php
+++ b/includes/libs/filebackend/FileBackendStore.php
@@ -1560,7 +1560,7 @@ abstract class FileBackendStore extends FileBackend {
 		$shards = [];
 		list( $digits, $base ) = $this->getContainerHashLevels( $container );
 		if ( $digits > 0 ) {
-			$numShards = pow( $base, $digits );
+			$numShards = $base ** $digits;
 			for ( $index = 0; $index < $numShards; $index++ ) {
 				$shards[] = '.' . Wikimedia\base_convert( $index, 10, $base, $digits );
 			}
diff --git a/includes/media/FormatMetadata.php b/includes/media/FormatMetadata.php
index 2a8b375a4012..52d7373aab7f 100644
--- a/includes/media/FormatMetadata.php
+++ b/includes/media/FormatMetadata.php
@@ -787,7 +787,7 @@ class FormatMetadata extends ContextSource {
 							}
 						}
 						if ( is_numeric( $val ) ) {
-							$fNumber = pow( 2, $val / 2 );
+							$fNumber = 2 ** ( $val / 2 );
 							if ( $fNumber !== false ) {
 								$val = $this->msg( 'exif-maxaperturevalue-value',
 									$this->formatNum( $val ),
diff --git a/includes/media/GIFMetadataExtractor.php b/includes/media/GIFMetadataExtractor.php
index a26539a87a4e..591ccf191fd0 100644
--- a/includes/media/GIFMetadataExtractor.php
+++ b/includes/media/GIFMetadataExtractor.php
@@ -264,7 +264,7 @@ class GIFMetadataExtractor {
 	 */
 	static function readGCT( $fh, $bpp ) {
 		if ( $bpp > 0 ) {
-			$max = pow( 2, $bpp );
+			$max = 2 ** $bpp;
 			for ( $i = 1; $i <= $max; ++$i ) {
 				fread( $fh, 3 );
 			}
diff --git a/includes/utils/UIDGenerator.php b/includes/utils/UIDGenerator.php
index 4d5c3af82f62..c23d99920c57 100644
--- a/includes/utils/UIDGenerator.php
+++ b/includes/utils/UIDGenerator.php
@@ -400,14 +400,14 @@ class UIDGenerator {
 			// Write back the new counter value
 			ftruncate( $handle, 0 );
 			rewind( $handle );
-			fwrite( $handle, fmod( $counter, pow( 2, 48 ) ) ); // warp-around as needed
+			fwrite( $handle, fmod( $counter, 2 ** 48 ) ); // warp-around as needed
 			fflush( $handle );
 			// Release the UID lock file
 			flock( $handle, LOCK_UN );
 		}
 
 		$ids = [];
-		$divisor = pow( 2, $bits );
+		$divisor = 2 ** $bits;
 		$currentId = floor( $counter - $count ); // pre-increment counter value
 		for ( $i = 0; $i < $count; ++$i ) {
 			$ids[] = fmod( ++$currentId, $divisor );
@@ -532,7 +532,7 @@ class UIDGenerator {
 	protected function millisecondsSinceEpochBinary( array $time ) {
 		list( $sec, $msec ) = $time;
 		$ts = 1000 * $sec + $msec;
-		if ( $ts > pow( 2, 52 ) ) {
+		if ( $ts > 2 ** 52 ) {
 			throw new RuntimeException( __METHOD__ .
 				': sorry, this function doesn\'t work after the year 144680' );
 		}
@@ -551,7 +551,7 @@ class UIDGenerator {
 		$offset = '122192928000000000';
 		if ( PHP_INT_SIZE >= 8 ) { // 64 bit integers
 			$ts = ( 1000 * $sec + $msec ) * 10000 + (int)$offset + $delta;
-			$id_bin = str_pad( decbin( $ts % pow( 2, 60 ) ), 60, '0', STR_PAD_LEFT );
+			$id_bin = str_pad( decbin( $ts % ( 2 ** 60 ) ), 60, '0', STR_PAD_LEFT );
 		} elseif ( extension_loaded( 'gmp' ) ) {
 			$ts = gmp_add( gmp_mul( (string)$sec, '1000' ), (string)$msec ); // ms
 			$ts = gmp_add( gmp_mul( $ts, '10000' ), $offset ); // 100ns intervals
diff --git a/includes/utils/ZipDirectoryReader.php b/includes/utils/ZipDirectoryReader.php
index f0ace2ccb3bd..20bad135151a 100644
--- a/includes/utils/ZipDirectoryReader.php
+++ b/includes/utils/ZipDirectoryReader.php
@@ -656,7 +656,7 @@ class ZipDirectoryReader {
 				}
 
 				// Throw an exception if there was loss of precision
-				if ( $value > pow( 2, 52 ) ) {
+				if ( $value > 2 ** 52 ) {
 					$this->error( 'zip-unsupported', 'number too large to be stored in a double. ' .
 						'This could happen if we tried to unpack a 64-bit structure ' .
 						'at an invalid location.' );
diff --git a/maintenance/generateSitemap.php b/maintenance/generateSitemap.php
index 5a2c6c7bdf32..e2dc9b8263f5 100644
--- a/maintenance/generateSitemap.php
+++ b/maintenance/generateSitemap.php
@@ -177,7 +177,7 @@ class GenerateSitemap extends Maintenance {
 	public function execute() {
 		$this->setNamespacePriorities();
 		$this->url_limit = 50000;
-		$this->size_limit = pow( 2, 20 ) * 10;
+		$this->size_limit = ( 2 ** 20 ) * 10;
 
 		# Create directory if needed
 		$fspath = $this->getOption( 'fspath', getcwd() );
diff --git a/maintenance/storage/storageTypeStats.php b/maintenance/storage/storageTypeStats.php
index 9ba3d1b9a75a..af9dd088dc9e 100644
--- a/maintenance/storage/storageTypeStats.php
+++ b/maintenance/storage/storageTypeStats.php
@@ -31,7 +31,7 @@ class StorageTypeStats extends Maintenance {
 			exit( 1 );
 		}
 
-		$binSize = intval( pow( 10, floor( log10( $endId ) ) - 3 ) );
+		$binSize = intval( 10 ** ( floor( log10( $endId ) ) - 3 ) );
 		if ( $binSize < 100 ) {
 			$binSize = 100;
 		}
diff --git a/tests/phpunit/includes/api/RandomImageGenerator.php b/tests/phpunit/includes/api/RandomImageGenerator.php
index 50a59f97e874..7fd5f1dd38cb 100644
--- a/tests/phpunit/includes/api/RandomImageGenerator.php
+++ b/tests/phpunit/includes/api/RandomImageGenerator.php
@@ -187,7 +187,7 @@ class RandomImageGenerator {
 		$spec['height'] = mt_rand( $this->minHeight, $this->maxHeight );
 		$spec['fill'] = $this->getRandomColor();
 
-		$diagonalLength = sqrt( pow( $spec['width'], 2 ) + pow( $spec['height'], 2 ) );
+		$diagonalLength = sqrt( $spec['width'] ** 2 + $spec['height'] ** 2 );
 
 		$draws = [];
 		for ( $i = 0; $i <= $this->shapesToDraw; $i++ ) {
diff --git a/tests/phpunit/languages/LanguageTest.php b/tests/phpunit/languages/LanguageTest.php
index 050ed83bed7b..8653bcd5b8f9 100644
--- a/tests/phpunit/languages/LanguageTest.php
+++ b/tests/phpunit/languages/LanguageTest.php
@@ -1110,27 +1110,27 @@ class LanguageTest extends LanguageClassesTestCase {
 				"1 gigabyte"
 			],
 			[
-				pow( 1024, 4 ),
+				1024 ** 4,
 				"1 TB",
 				"1 terabyte"
 			],
 			[
-				pow( 1024, 5 ),
+				1024 ** 5,
 				"1 PB",
 				"1 petabyte"
 			],
 			[
-				pow( 1024, 6 ),
+				1024 ** 6,
 				"1 EB",
 				"1,024 exabyte"
 			],
 			[
-				pow( 1024, 7 ),
+				1024 ** 7,
 				"1 ZB",
 				"1 zetabyte"
 			],
 			[
-				pow( 1024, 8 ),
+				1024 ** 8,
 				"1 YB",
 				"1 yottabyte"
 			],
@@ -1173,37 +1173,37 @@ class LanguageTest extends LanguageClassesTestCase {
 				"1 megabit per second"
 			],
 			[
-				pow( 10, 9 ),
+				10 ** 9,
 				"1 Gbps",
 				"1 gigabit per second"
 			],
 			[
-				pow( 10, 12 ),
+				10 ** 12,
 				"1 Tbps",
 				"1 terabit per second"
 			],
 			[
-				pow( 10, 15 ),
+				10 ** 15,
 				"1 Pbps",
 				"1 petabit per second"
 			],
 			[
-				pow( 10, 18 ),
+				10 ** 18,
 				"1 Ebps",
 				"1 exabit per second"
 			],
 			[
-				pow( 10, 21 ),
+				10 ** 21,
 				"1 Zbps",
 				"1 zetabit per second"
 			],
 			[
-				pow( 10, 24 ),
+				10 ** 24,
 				"1 Ybps",
 				"1 yottabit per second"
 			],
 			[
-				pow( 10, 27 ),
+				10 ** 27,
 				"1,000 Ybps",
 				"1,000 yottabits per second"
 			],