PHP Level 2, Regular Expressions
6 Questions
| Total Attempts: 1773
This quiz is a test of basic PCRE, aka, preg_match(). Difficult concepts in regexes are not covered. Passing the test indicates that you have a basic understanding of regexes.
Questions and Answers
- 1.In the following statement, what does the "+" symbol mean?preg_match('/^[0-9]+$/', $data)
- A.
Any character
- B.
One character between 0 and 9
- C.
One or more characters between 0 and 9
- D.
Zero or more characters between 0 and 9
- E.
Any character between 0 and 9 followed by a $
- 2.What would match the regex in the following statement:preg_match('/^[0-9]{3}-[0-9]{2,4}$/', $data)
- A.
98090
- B.
213-99
- C.
415
- D.
1-2345
- E.
5-99
- 3.Rank these three function in the order of their typical speed, slowest to fastest: preg_match(), strpos(), ereg().
- A.
Preg_match, strpos, ereg
- B.
Ereg, preg_match, strpos
- C.
Ereg, strpos, preg_match
- D.
Preg_match, ereg, strpos
- 4.How long is the shortest string that would match this regex:preg_match('/^[a-z]+[0-9]*[A-Z]{2,10}$/')
- A.
0 characters (empty string)
- B.
1 character
- C.
2 characters
- D.
3 characters
- E.
4 characters
- 5.What is the value of $matches[1]?preg_match('/([0-9]{3})-([0-9]{3})-([0-9]{4})/', "TEL 323-555-1212", $matches);
- A.
TEL
- B.
323
- C.
555
- D.
1212
- 6.Which of the following is NOT a typical use for regular expressions in PHP.
- A.
Validating input data
- B.
Dividing input text into substrings.
- C.
Converting hexadecimal into decimal.
- D.
Replacing strings with other strings.
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