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質問 1：
Consider the following table data and PHP code. What is the outcome?
Table data (table name "users" with primary key "id"):
PHP code (assume the PDO connection is correctly established):
$ dsn = 'mysql:host=localhost;dbname=exam';
$ user= 'username';
$ pass='********';
$ pdo = new PDO{$dsn, $user, $pass);
$ cmd ="SELECT* FROM users WHERE id= :id";
$ stmt = $pdo->prepare($cmd);
$ id = 3;
$ stmt->bindParam('id', $id);
$ stmt->execute();
$ stmt->bindColumn{3, $result);
$ row= $stmt->fetch(PDO::FETCH_BOUND);
A. The value of $result will be empty.
B. The database will return no rows.
C. The value of $row will be an array.
D. The value of $result will be '[email protected]'.
正解：D
質問 2：
What will an opcode cache ALWAYS automatically improve?
A. Running time of a loop in a PHP script
B. Memory footprint of a PHP script
C. Efficiency of HTML markup generated by a PHP script
D. Execution speed of a PHP script
E. None of the above
正解：E
質問 3：
Which of the following may be used in conjunction with CASE inside a SWITCH statement?
A. A boolean
B. All of the above
C. A scalar
D. An expression
正解：B
質問 4：
Which of the following statements is NOT correct?
A. Type hints can be references
B. Only methods can have type hints
C. Type hints can be optional
正解：B
質問 5：
What is the return value of the following code?
strpos("me myself and I", "m", 2)
A. 0
B. 4
C. 1
D. 3
E. 2
正解：D
Consider the following table data and PHP code. What is the outcome?
Table data (table name "users" with primary key "id"):
PHP code (assume the PDO connection is correctly established):
$ dsn = 'mysql:host=localhost;dbname=exam';
$ user= 'username';
$ pass='********';
$ pdo = new PDO{$dsn, $user, $pass);
$ cmd ="SELECT* FROM users WHERE id= :id";
$ stmt = $pdo->prepare($cmd);
$ id = 3;
$ stmt->bindParam('id', $id);
$ stmt->execute();
$ stmt->bindColumn{3, $result);
$ row= $stmt->fetch(PDO::FETCH_BOUND);
A. The value of $result will be empty.
B. The database will return no rows.
C. The value of $row will be an array.
D. The value of $result will be '[email protected]'.
正解：D
質問 2：
What will an opcode cache ALWAYS automatically improve?
A. Running time of a loop in a PHP script
B. Memory footprint of a PHP script
C. Efficiency of HTML markup generated by a PHP script
D. Execution speed of a PHP script
E. None of the above
正解：E
質問 3：
Which of the following may be used in conjunction with CASE inside a SWITCH statement?
A. A boolean
B. All of the above
C. A scalar
D. An expression
正解：B
質問 4：
Which of the following statements is NOT correct?
A. Type hints can be references
B. Only methods can have type hints
C. Type hints can be optional
正解：B
質問 5：
What is the return value of the following code?
strpos("me myself and I", "m", 2)
A. 0
B. 4
C. 1
D. 3
E. 2
正解：D
宫地** -
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