php-pack/data/basics.yml at b74a9652b86156d2db33c3c34be82d5659aa8bb2 · certificationy/php-pack · GitHub

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category: Basics
questions:
    -
        question: 'Which of the following tags are an acceptable way to begin a PHP code block?'
        answers:
            - {value: '<SCRIPT LANGUAGE="php">', correct: false}
            - {value: '<!', correct: false}
            - {value: '<%', correct: false}
            - {value: '<?', correct: true}

    -
        question: 'Which of the following are valid PHP variables?'
        answers:
            - {value: '@$foo', correct: true}
            - {value: '&$variable', correct: true}
            - {value: '${0x0}', correct: false}
            - {value: '$0x0', correct: false}
    -
        question: 'What is the best way to iterate and modify every element of an array using PHP?'
        answers:
            - {value: 'You cannot modify an array during iteration.', correct: false}
            - {value: 'for ($i = 0; $i < count($array); $i++) { /* ... * / }', correct: false}
            - {value: 'foreach ($array as $key => &$val) { /* ... * / }', correct: true}
            - {value: 'foreach ($array as $key => $val) { /* ... * / }', correct: false}
            - {value: 'while (list($key, $val) = each($array)) { /* ... * / }', correct: false}
    -
        question: |
                       What is the output of the following PHP code?
                       define("FOO", 10);
                       $array = [10 => FOO, "FOO" => 20];
                       echo $array[$array[FOO]] * $array["FOO"];

        answers:
            - {value: 'FOO', correct: false}
            - {value: 100, correct: false}
            - {value: 200, correct: true}
            - {value: 20, correct: false}
            - {value: 10, correct: false}
    -
        question: |
                       What is the output of the following PHP script?
                       $a = 1;
                       $b = 2.5;
                       $c = 0xFF;
                       $d = $b + $c;
                       $e = $d * $b;
                       $f = ($d + $e) % $a;
                       echo ($f + $e);
        answers:
            - {value: 643.75, correct: true}
            - {value: 432, correct: false}
            - {value: 643, correct: false}
            - {value: 257, correct: false}
            - {value: 432.75, correct: false}
    -
        question: |
                        What is the output of the following?
                        $a = 010;
                        $b = 0xA;
                        $c = 2;

                        echo $a + $b + $c;
        answers:
            - {value: '20', correct: true}
            - {value: '22', correct: false}
            - {value: '$a is an invalid value', correct: false}
            - {value: '2', correct: false}