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<?php$strings = array('AbCd1zyZ9', 'foo!#$bar');foreach ($strings as $testcase) {    if (ctype_alnum($testcase)) {        echo "The string $testcase consists of all letters or digits.\n";    } else {        echo "The string $testcase does not consist of all letters or digits.\n";    }}?>
Output for git.master, git.master_jit, rfc.property-hooks
<?php$strings = array('AbCd1zyZ9', 'foo!#$bar');foreach ($strings as $testcase) {    if (ctype_alnum($testcase)) {        echo "The string $testcase consists of all letters or digits.\n";    } else {        echo "The string $testcase does not consist of all letters or digits.\n";    }}?>

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