The latest summary of multiple choice questions for PHP interview questions-PHP Tutorial-php.cn

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1. What is the output?

A.EmptyB.true C.false D.FALSE

echo function_exists('print');

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Analysis: Because print is a language structure, function_exists() returns false; echo false is empty.

2. Which is the function

A.array B.evalC.eachD.list

Analysis: array, eval, and list are language structures, and each is a function.

3. Which function will be added below to return TRUE

A.ord(65)B.chr(65)C.65 '' D.'' 65

return ? == 'A';

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Analysis: ord('A') is converted to a number, chr(65) is converted to a character.

4. The output result of the following code

A.hello B. Empty C. ErrorD.hellohello

$a[bar] = 'hello'; echo $a[bar]; echo $a['bar'];

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Analysis: The subscript bar can be recognized without quotation marks, but it is recommended to add quotation marks.

5. What is the code that can get "banana"?

$arr = ['name'=>'banana'];

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A.echo "{$res['name']}";

B.echo "$res['name' ]";

C.echo "{$res[name]}";

D.echo " $res[name]”;

Analysis: Within double quotes, if the array subscript is a string, single quotes cannot be added unless {} is added.

6. Which of the following errors cannot be caught by the standard error controller

A.E_WARNING

B.E_USER_ERROR

C.E_PARSE

D.E_NOTICE

Analysis:


E_ERROR	Fatal runtime error. This type of error is generally an unrecoverable situation, such as a problem caused by memory allocation. The consequence is that the script terminates and does not continue to run.
E_WARNING	Runtime warning. Only a prompt message is given, but the script does not terminate.
E_PARSE	Compile-time syntax parsing error. Parsing errors are generated only by the parser.
E_NOTICE	Runtime notification. Indicates that the script encounters a situation that may appear as an error, but there may also be similar notifications in scripts that can run normally.
E_USER_ERROR	User-generated error message. Similar to E_ERROR, but generated by the user using the PHP function trigger_error() in the code.

8. Which of the following error types cannot be caught by a custom error handler?

A.E_WARNING

B.E_USER_ERROR

C.E_PARSE

D.E_NOTICE

This article was first published on the LearnKu.com website.

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