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How to use loop method of runner class

Best Atoum code snippet using runner.loop

JobRunnerPipeline.php

Source:JobRunnerPipeline.php

1<?php2class JobRunnerPipeline {3	/** @var RedisJobService */4	protected $srvc;5	/** @var array (loop ID => slot ID => slot status array) */6	protected $procMap = [];7	/**8	 * @param RedisJobService $service9	 */10	public function __construct( RedisJobService $service ) {11		$this->srvc = $service;12	}13	/**14	 * @param string $loop15	 * @param int $slot16	 */17	public function initSlot( string $loop, int $slot ) {18		$this->procMap[$loop][$slot] = [19			'handle'  => false,20			'pipes'   => [],21			'db'      => null,22			'type'    => null,23			'cmd'     => null,24			'stime'   => 0,25			'sigtime' => 0,26			'stdout' => '',27			'stderr' => ''28		];29	}30	/**31	 * @param integer $loop32	 * @param array $prioMap33	 * @param array $pending34	 * @return array35	 */36	public function refillSlots( int $loop, array $prioMap, array &$pending ) : array {37		$free = 0;38		$new = 0;39		$host = gethostname();40		$cTime = time();41		foreach ( $this->procMap[$loop] as $slot => &$procSlot ) {42			$status = $procSlot['handle'] ? proc_get_status( $procSlot['handle'] ) : null;43			if ( $status ) {44				// Keep reading in any output (nonblocking) to avoid process lockups45				$procSlot['stdout'] .= fread( $procSlot['pipes'][1], 65535 );46				$procSlot['stderr'] .= fread( $procSlot['pipes'][2], 65535 );47			}48			if ( $status && $status['running'] ) {49				$maxReal = isset( $this->srvc->maxRealMap[$procSlot['type']] )50					? $this->srvc->maxRealMap[$procSlot['type']]51					: $this->srvc->maxRealMap['*'];52				$age = $cTime - $procSlot['stime'];53				if ( $age >= $maxReal && !$procSlot['sigtime'] ) {54					$cmd = $procSlot['cmd'];55					$this->srvc->error( "Runner loop $loop process in slot $slot timed out " .56						"[{$age}s; max: {$maxReal}s]:\n$cmd" );57					posix_kill( $status['pid'], SIGTERM ); // non-blocking58					$procSlot['sigtime'] = time();59					$this->srvc->incrStats( 'runner-status.timeout' );60				} elseif ( $age >= $maxReal && ( $cTime - $procSlot['sigtime'] ) > 5 ) {61					$this->srvc->error( "Runner loop $loop process in slot $slot sent SIGKILL." );62					$this->closeRunner( $loop, $slot, $procSlot, SIGKILL );63					$this->srvc->incrStats( 'runner-status.kill' );64				} else {65					continue; // slot is busy66				}67			} elseif ( $status && !$status['running'] ) {68				// $result will be an array if no exceptions happened69				$result = json_decode( trim( $procSlot['stdout'] ), true );70				if ( $status['exitcode'] == 0 && is_array( $result ) ) {71					// If this finished early, lay off of the queue for a while72					if ( ( $cTime - $procSlot['stime'] ) < $this->srvc->hpMaxTime/2 ) {73						unset( $pending[$procSlot['type']][$procSlot['db']] );74						$this->srvc->debug( "Queue '{$procSlot['db']}/{$procSlot['type']}' emptied." );75					}76					$ok = 0; // jobs that ran OK77					foreach ( $result['jobs'] as $status ) {78						$ok += ( $status['status'] === 'ok' ) ? 1 : 0;79					}80					$failed = count( $result['jobs'] ) - $ok;81					$this->srvc->incrStats( "pop.{$procSlot['type']}.ok.{$host}", $ok );82					$this->srvc->incrStats( "pop.{$procSlot['type']}.failed.{$host}", $failed );83				} else {84					// Mention any serious errors that may have occured85					$cmd = $procSlot['cmd'];86					if ( $procSlot['stderr'] ) {87						$error = $procSlot['stderr'];88						$cmd .= ' STDERR:';89					} else {90						$error = $procSlot['stdout'];91						$cmd .= ' STDOUT:';92					}93					// if ( strlen( $error ) > 4096 ) { // truncate long errors94					// 	$error = mb_substr( $error, 0, 4096 ) . '...';95					// }96					$this->srvc->error( "Runner loop $loop process in slot $slot " .97						"gave status '{$status['exitcode']}':\n$cmd\n\t$error" );98					$this->srvc->incrStats( 'runner-status.error' );99				}100				$this->closeRunner( $loop, $slot, $procSlot );101			} elseif ( !$status && $procSlot['handle'] ) {102				$this->srvc->error( "Runner loop $loop process in slot $slot gave no status." );103				$this->closeRunner( $loop, $slot, $procSlot );104				$this->srvc->incrStats( 'runner-status.none' );105			}106			++$free;107			$queue = $this->selectQueue( $loop, $prioMap, $pending );108			if ( !$queue ) {109				break;110			}111			// Spawn a job runner for this loop ID112			$highPrio = $prioMap[$loop]['high'];113			$this->spawnRunner( $loop, $slot, $highPrio, $queue, $procSlot );114			++$new;115		}116		unset( $procSlot );117		return [ $free, $new ];118	}119	/**120	 * @param integer $loop121	 * @param array $prioMap122	 * @param array $pending123	 * @return array|boolean124	 */125	protected function selectQueue( int $loop, array $prioMap, array $pending ) {126		$include = $this->srvc->loopMap[$loop]['include'];127		$exclude = $this->srvc->loopMap[$loop]['exclude'];128		if ( $prioMap[$loop]['high'] ) {129			$exclude = array_merge( $exclude, $this->srvc->loopMap[$loop]['low-priority'] );130		} else {131			$include = array_merge( $include, $this->srvc->loopMap[$loop]['low-priority'] );132		}133		if ( in_array( '*', $include ) ) {134			$include = array_merge( $include, array_keys( $pending ) );135		}136		$candidateTypes = array_diff( array_unique( $include ), $exclude, [ '*' ] );137		$candidates = []; // list of (type, db)138		// Flatten the tree of candidates into a flat list so that a random139		// item can be selected, weighing each queue (type/db tuple) equally.140		foreach ( $candidateTypes as $type ) {141			if ( isset( $pending[$type] ) ) {142				foreach ( $pending[$type] as $db => $since ) {143					$candidates[] = [ $type, $db ];144				}145			}146		}147		if ( !count( $candidates ) ) {148			return false; // no jobs for this type149		}150		return $candidates[mt_rand( 0, count( $candidates ) - 1 )];151	}152	/**153	 * @param integer $loop154	 * @param integer $slot155	 * @param bool $highPrio156	 * @param array $queue157	 * @param array $procSlot158	 * @return bool159	 */160	protected function spawnRunner( int $loop, int $slot, bool $highPrio, array $queue, array &$procSlot ) : bool {161		// Pick a random queue162		list( $type, $db ) = $queue;163		$maxtime = $highPrio ? $this->srvc->lpMaxTime : $this->srvc->hpMaxTime;164		$maxmem = isset( $this->srvc->maxMemMap[$type] )165			? $this->srvc->maxMemMap[$type]166			: $this->srvc->maxMemMap['*'];167		// Make sure the runner is launched with various time/memory limits.168		// Nice the process so things like ssh and deployment scripts are fine.169		$what = $with = [];170		foreach ( compact( 'db', 'type', 'maxtime', 'maxmem' ) as $k => $v ) {171			$what[] = "%($k)u";172			$with[] = rawurlencode( $v );173			$what[] = "%($k)x";174			$with[] = escapeshellarg( $v );175		}176		// The dispatcher might be runJobs.php, curl, or wget177		$cmd = str_replace( $what, $with, $this->srvc->dispatcher );178		$descriptors = [179			0 => [ "pipe", "r" ], // stdin (child)180			1 => [ "pipe", "w" ], // stdout (child)181			2 => [ "pipe", "w" ] // stderr (child)182		];183		$this->srvc->debug( "Spawning runner in loop $loop at slot $slot ($type, $db):\n\t$cmd." );184		// Start the runner in the background185		$procSlot['handle'] = proc_open( $cmd, $descriptors, $procSlot['pipes'] );186		if ( $procSlot['handle'] ) {187			// Make sure socket reads don't wait for data188			stream_set_blocking( $procSlot['pipes'][1], 0 );189			stream_set_blocking( $procSlot['pipes'][2], 0 );190			// Set a timeout so stream_get_contents() won't block for sanity191			stream_set_timeout( $procSlot['pipes'][1], 1 );192			stream_set_timeout( $procSlot['pipes'][2], 1 );193			// Close the unused STDIN pipe194			fclose( $procSlot['pipes'][0] );195			unset( $procSlot['pipes'][0] ); // unused196		}197		$procSlot['db'] = $db;198		$procSlot['type'] = $type;199		$procSlot['cmd'] = $cmd;200		$procSlot['stime'] = time();201		$procSlot['sigtime'] = 0;202		$procSlot['stdout'] = '';203		$procSlot['stderr'] = '';204		if ( $procSlot['handle'] ) {205			return true;206		} else {207			$this->srvc->error( "Could not spawn process in loop $loop: $cmd" );208			$this->srvc->incrStats( 'runner-status.error' );209			return false;210		}211	}212	/**213	 * @param integer $loop214	 * @param integer $slot215	 * @param array $procSlot216	 * @param int|null $signal217	 */218	protected function closeRunner( int $loop, int $slot, array &$procSlot, int $signal = null ) {219		if ( $procSlot['pipes'] ) {220			if ( $procSlot['pipes'][1] !== false ) {221				fclose( $procSlot['pipes'][1] );222				$procSlot['pipes'][1] = false;223			}224			if ( $procSlot['pipes'][2] !== false ) {225				fclose( $procSlot['pipes'][2] );226				$procSlot['pipes'][2] = false;227			}228		}229		if ( $procSlot['handle'] ) {230			$this->srvc->debug( "Closing process in loop $loop at slot $slot." );231			if ( $signal !== null ) {232				// Tell the process to close with a signal233				proc_terminate( $procSlot['handle'], $signal );234			} else {235				// Wait for the process to finish on its own236				proc_close( $procSlot['handle'] );237			}238		}239		$procSlot['handle'] = false;240		$procSlot['db'] = null;241		$procSlot['type'] = null;242		$procSlot['stime'] = 0;243		$procSlot['sigtime'] = 0;244		$procSlot['cmd'] = null;...

redisJobRunnerService

Source:redisJobRunnerService

...11	/**12	 * @throws Exception13	 */14	public function main() {15		$this->notice( "Starting job spawner loop(s)..." );16		$host = gethostname();17		$prioMap = []; // map of (id => (current priority, since))18		$pipeline = new JobRunnerPipeline( $this );19		foreach ( $this->loopMap as $loop => $info ) {20			for ( $i=0; $i < $info['runners']; ++$i ) {21				$pipeline->initSlot( $loop, $i );22				$prioMap[$loop] = [ 'high' => (bool)mt_rand( 0, 1 ), 'since' => time() ];23			}24			$this->notice( "Initialized loop $loop with {$info['runners']} runner(s)." );25		}26		// Setup signal handlers...27		$handlerFunc = function( $signo ) use ( $pipeline ) {28			print "Caught signal ($signo)\n";29			$pipeline->terminateSlots();30			exit( 0 );31		};32		$ok = pcntl_signal( SIGHUP, $handlerFunc )33			&& pcntl_signal( SIGINT, $handlerFunc )34			&& pcntl_signal( SIGTERM, $handlerFunc );35		if ( !$ok ) {36			throw new Exception( 'Could not install signal handlers.' );37		}38		$memLast = memory_get_usage();39		$this->incrStats( "start-runner.$host" );40		while ( true ) {41			pcntl_signal_dispatch();42			$prioSwitches = 0;43			$anyNew = 0;44			$anyFree = 0;45			// Get the list of ready queues46			$pending =& $this->getReadyQueueMap();47			if ( !count( $pending ) ) {48				$this->debug( "No jobs available..." );49				$this->incrStats( "idle.$host" );50				usleep( 100000 ); // no jobs51				continue;52			}53			// Spawn new runners as slots become available54			foreach ( $prioMap as $loop => &$loopPriority ) {55				$this->debug( "Checking runner loop $loop..." );56				// Implement high/low priority via time-sharing57				if ( $loopPriority['high']58					&& ( time() - $loopPriority['since'] ) > $this->lpMaxDelay59				) {60					$loopPriority['high'] = false;61					$loopPriority['since'] = time();62					$this->debug( "Runner loop $loop now in low priority." );63					++$prioSwitches;64				} elseif ( !$loopPriority['high']65					&& ( time() - $loopPriority['since'] ) > $this->hpMaxDelay66				) {67					$loopPriority['high'] = true;68					$loopPriority['since'] = time();69					$this->debug( "Runner loop $loop now in high priority." );70					++$prioSwitches;71				}72				// Find any free slots and replace them with new processes73				list( $free, $new ) = $pipeline->refillSlots( $loop, $prioMap, $pending );74				$anyFree += $free;75				$anyNew += $new;76				// Rotate the priority from high/low and back if no jobs were found77				if ( !$free ) {78					$this->debug( "Runner loop $loop is full." );79				} elseif ( !$new ) {80					if ( $loopPriority['high'] ) {81						$loopPriority['high'] = false;82						$this->debug( "Runner loop $loop now in low priority." );83					} else {84						$loopPriority['high'] = true;85						$this->debug( "Runner loop $loop now in high priority." );86					}87					$loopPriority['since'] = time();88					$this->debug( "Runner loop $loop has no jobs." );89					++$prioSwitches;90				} else {91					$this->debug( "Done checking loop $loop." );92				}93			}94			unset( $loopPriority );95			$this->incrStats( "spawn.$host", $anyNew );96			$this->incrStats( "prioritychange.$host", $prioSwitches );97			// Backoff if there is nothing to do98			if ( !$anyFree ) {99				$this->debug( "All runner loops full." );100				$this->incrStats( "all-full.$host" );101				usleep( 100000 );102			} elseif ( !$anyNew ) {103				$this->debug( "Loops have free slots, but there are no appropriate jobs." );104				$this->incrStats( "some-full.$host" );105				usleep( 100000 );106			}107			// Track memory usage108			$memCurrent = memory_get_usage();109			$this->debug( "Memory usage: $memCurrent bytes." );110			$this->incrStats( "memory.$host", $memCurrent - $memLast );111			$this->sendStats();112			$memLast = $memCurrent;113		}...

WorkerCommand.php

Source:WorkerCommand.php

1<?php2declare (strict_types=1);3namespace Rector\Core\Console\Command;4use RectorPrefix20211231\Clue\React\NDJson\Decoder;5use RectorPrefix20211231\Clue\React\NDJson\Encoder;6use RectorPrefix20211231\React\EventLoop\StreamSelectLoop;7use RectorPrefix20211231\React\Socket\ConnectionInterface;8use RectorPrefix20211231\React\Socket\TcpConnector;9use Rector\Parallel\WorkerRunner;10use RectorPrefix20211231\Symfony\Component\Console\Input\InputInterface;11use RectorPrefix20211231\Symfony\Component\Console\Output\OutputInterface;12use RectorPrefix20211231\Symplify\EasyParallel\Enum\Action;13use RectorPrefix20211231\Symplify\EasyParallel\Enum\ReactCommand;14/**15 * Inspired at: https://github.com/phpstan/phpstan-src/commit/9124c66dcc55a222e21b1717ba5f60771f7dda9216 * https://github.com/phpstan/phpstan-src/blob/c471c7b050e0929daf432288770de673b394a983/src/Command/WorkerCommand.php17 *18 * âââ19 * https://github.com/phpstan/phpstan-src/commit/b84acd2e3eadf66189a64fdbc6dd18ff76323f67#diff-7f625777f1ce5384046df08abffd6c911cfbb1cfc8fcb2bdeaf78f337689e3e220 */21final class WorkerCommand extends \Rector\Core\Console\Command\AbstractProcessCommand22{23    /**24     * @readonly25     * @var \Rector\Parallel\WorkerRunner26     */27    private $workerRunner;28    public function __construct(\Rector\Parallel\WorkerRunner $workerRunner)29    {30        $this->workerRunner = $workerRunner;31        parent::__construct();32    }33    protected function configure() : void34    {35        $this->setDescription('(Internal) Support for parallel process');36        parent::configure();37    }38    protected function execute(\RectorPrefix20211231\Symfony\Component\Console\Input\InputInterface $input, \RectorPrefix20211231\Symfony\Component\Console\Output\OutputInterface $output) : int39    {40        $configuration = $this->configurationFactory->createFromInput($input);41        $streamSelectLoop = new \RectorPrefix20211231\React\EventLoop\StreamSelectLoop();42        $parallelIdentifier = $configuration->getParallelIdentifier();43        $tcpConnector = new \RectorPrefix20211231\React\Socket\TcpConnector($streamSelectLoop);44        $promise = $tcpConnector->connect('127.0.0.1:' . $configuration->getParallelPort());45        $promise->then(function (\RectorPrefix20211231\React\Socket\ConnectionInterface $connection) use($parallelIdentifier, $configuration) : void {46            $inDecoder = new \RectorPrefix20211231\Clue\React\NDJson\Decoder($connection, \true, 512, \JSON_INVALID_UTF8_IGNORE);47            $outEncoder = new \RectorPrefix20211231\Clue\React\NDJson\Encoder($connection, \JSON_INVALID_UTF8_IGNORE);48            // handshake?49            $outEncoder->write([\RectorPrefix20211231\Symplify\EasyParallel\Enum\ReactCommand::ACTION => \RectorPrefix20211231\Symplify\EasyParallel\Enum\Action::HELLO, \RectorPrefix20211231\Symplify\EasyParallel\Enum\ReactCommand::IDENTIFIER => $parallelIdentifier]);50            $this->workerRunner->run($outEncoder, $inDecoder, $configuration);51        });52        $streamSelectLoop->run();53        return self::SUCCESS;54    }55}...

loop

Using AI Code Generation

1$runner = new Runner();2$runner->runLoop();3$runner = new Runner();4$runner->runRecursive();5$runner = new Runner();6$runner->runRecursive();7$runner = new Runner();8$runner->runRecursive();9$runner = new Runner();10$runner->runRecursive();11$runner = new Runner();12$runner->runRecursive();13$runner = new Runner();14$runner->runRecursive();15$runner = new Runner();16$runner->runRecursive();17$runner = new Runner();18$runner->runRecursive();19$runner = new Runner();20$runner->runRecursive();21$runner = new Runner();22$runner->runRecursive();23$runner = new Runner();24$runner->runRecursive();25$runner = new Runner();26$runner->runRecursive();27$runner = new Runner();28$runner->runRecursive();29$runner = new Runner();30$runner->runRecursive();31$runner = new Runner();32$runner->runRecursive();33$runner = new Runner();34$runner->runRecursive();

loop

Using AI Code Generation

1$runner = new Runner();2$runner->run();3$runner = new Runner();4$runner->runRecursive();5$runner = new Runner();6$runner->runIterator();7$runner = new Runner();8$runner->runIteratorRecursive();9$runner = new Runner();10$runner->runIteratorRecursive2();11$runner = new Runner();12$runner->runIteratorRecursive3();13$runner = new Runner();14$runner->runIteratorRecursive4();15$runner = new Runner();16$runner->runIteratorRecursive5();17$runner = new Runner();18$runner->runIteratorRecursive6();19$runner = new Runner();20$runner->runIteratorRecursive7();21$runner = new Runner();22$runner->runIteratorRecursive8();23$runner = new Runner();24$runner->runIteratorRecursive9();25$runner = new Runner();26$runner->runIteratorRecursive10();27$runner = new Runner();28$runner->runIteratorRecursive11();29$runner = new Runner();30$runner->runIteratorRecursive12();31$runner = new Runner();32$runner->runIteratorRecursive13();33$runner = new Runner();

loop

Using AI Code Generation

1$runner = new Runner();2$runner->loop(10);3$runner->loop(20);4$runner->loop(30);5$runner->loop(40);6$runner->loop(50);7$runner->loop(60);8$runner->loop(70);9$runner->loop(80);10$runner->loop(90);11$runner->loop(100);12$runner = new Runner();13$runner->loop(10);14$runner->loop(20);15$runner->loop(30);16$runner->loop(40);17$runner->loop(50);18$runner->loop(60);19$runner->loop(70);20$runner->loop(80);21$runner->loop(90);22$runner->loop(100);23$runner = new Runner();24$runner->loop(10);25$runner->loop(20);26$runner->loop(30);27$runner->loop(40);28$runner->loop(50);29$runner->loop(60);30$runner->loop(70);31$runner->loop(80);32$runner->loop(90);33$runner->loop(100);34$runner = new Runner();35$runner->loop(10);36$runner->loop(20);37$runner->loop(30);38$runner->loop(40);39$runner->loop(50);40$runner->loop(60);41$runner->loop(70);42$runner->loop(80);43$runner->loop(90);44$runner->loop(100);45$runner = new Runner();46$runner->loop(10);47$runner->loop(20);48$runner->loop(30);49$runner->loop(40);50$runner->loop(50);51$runner->loop(60);52$runner->loop(70);53$runner->loop(80);54$runner->loop(90);55$runner->loop(100);56$runner = new Runner();57$runner->loop(10);58$runner->loop(20);59$runner->loop(30);60$runner->loop(40

loop

Using AI Code Generation

1$runner = new Runner();2$runner->loop(100, function($i){3    echo $i;4});5$runner = new Runner();6$runner->recursive(100, function($i){7    echo $i;8});9$runner = new Runner();10$runner->recursive2(100, function($i){11    echo $i;12});13$runner = new Runner();14$runner->recursive3(100, function($i){15    echo $i;16});17$runner = new Runner();18$runner->recursive4(100, function($i){19    echo $i;20});21$runner = new Runner();22$runner->recursive5(100, function($i){23    echo $i;24});25$runner = new Runner();26$runner->recursive6(100, function($i){27    echo $i;28});29$runner = new Runner();30$runner->recursive7(100, function($i){31    echo $i;32});33$runner = new Runner();34$runner->recursive8(100, function($i){35    echo $i;36});37$runner = new Runner();38$runner->recursive9(100, function($i){39    echo $i;40});41$runner = new Runner();42$runner->recursive10(100, function($i){43    echo $i;44});45$runner = new Runner();46$runner->recursive11(100, function($i){47    echo $i;48});49$runner = new Runner();

loop

Using AI Code Generation

1$runner = new Runner();2$runner->loop($runner->getRunner());3$runner = new Runner();4$runner->recursive($runner->getRunner());5$runner = new Runner();6$runner->callback($runner->getRunner());7$runner = new Runner();8$runner->array_walk_recursive($runner->getRunner());9$runner = new Runner();10$runner->array_map($runner->getRunner());11$runner = new Runner();12$runner->array_reduce($runner->getRunner());13$runner = new Runner();14$runner->array_filter($runner->getRunner());15$runner = new Runner();16$runner->array_reduce($runner->getRunner());17$runner = new Runner();18$runner->array_reduce($runner->getRunner());19$runner = new Runner();20$runner->array_reduce($runner->getRunner());21$runner = new Runner();22$runner->array_reduce($runner->getRunner());23$runner = new Runner();24$runner->array_reduce($runner->getRunner());25$runner = new Runner();26$runner->array_reduce($runner->getRunner());27$runner = new Runner();28$runner->array_reduce($runner->getRunner());29$runner = new Runner();

loop

Using AI Code Generation

1$runner = new Runner();2$runner->loop('2.php');3$runner = new Runner();4$runner->loop('3.php');5$runner = new Runner();6$runner->loop('4.php');7$runner = new Runner();8$runner->loop('5.php');9$runner = new Runner();10$runner->loop('6.php');11$runner = new Runner();12$runner->loop('7.php');13$runner = new Runner();14$runner->loop('8.php');15$runner = new Runner();16$runner->loop('9.php');17$runner = new Runner();18$runner->loop('10.php');19$runner = new Runner();20$runner->loop('11.php');21$runner = new Runner();22$runner->loop('12.php');23$runner = new Runner();24$runner->loop('13.php');25$runner = new Runner();26$runner->loop('14.php');

loop

Using AI Code Generation

1include_once("runner.php");2$runner = new runner();3$runner->loop();4class runner {5    public function loop() {6        $counter = 1;7        $sum = 0;8        $average = 0;9        $max = 0;10        $min = 0;11        $first = 0;12        $last = 0;13        $count = 0;

loop

Using AI Code Generation

1for (i=1;i<=10;i++){2echo "The number is " . $i . "<br>";3}4while (i<=10){5echo "The number is " . $i . "<br>";6$i++;7}8do {9echo "The number is " . $i . "<br>";10$i++;11} while (i<=10);12$colors = array("red", "green", "blue", "yellow"); 13foreach ($colors as $value) {14echo "$value <br>";15}16$colors = array("red", "green", "blue", "yellow"); 17foreach ($colors as $value) {18echo "$value <br>";19}20$colors = array("red", "green", "blue", "yellow"); 21foreach ($colors as $value) {22echo "$value <br>";23}24$colors = array("red", "green", "blue", "yellow"); 25foreach ($colors as $value) {26echo "$value <br>";27}

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.