Once each individual test case is created a suite can be created

Creating a test suite
<?php
    $suite = new PHPUnit_TestSuite();
 
    $test[] = new EmailAddressTestCase('testLocalPart');
    $test[] = new EmailAddressTestCase('testDomain');
    
    $suite->addTest($test[0]);
    $suite->addTest($test[1]);
 
    $result = PHPUnit::run($suite);
 
    echo $result->toString();
 ?>
Creating a test suite automatically
<?php
    $suite = new PHPUnit_TestSuite('EmailAddressTestCase');
    
    $result = PHPUnit::run($suite);
    
    echo $result->toString();
?>