Tag: web technology

Questions Related to web technology

When compared to the compiled program, scripts run
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  1. Faster

  2. Slower

  3. The execution speed is similar

  4. All of above

Show answer
Correct Option: B
Explanation:

To solve this question, the user needs to know basic concepts of programming languages and how they are executed.

The answer is:

B. Slower

Scripts are interpreted line by line during runtime, whereas compiled programs are translated into machine language (binary code) before runtime. This means that compiled programs are faster than scripts because they do not require interpretation during runtime. On the other hand, scripts are easier to write, modify, and debug because they do not need to be compiled before execution.

PHP is a widely used ……………. scripting language that is especially suited for web development and can be embedded into html
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  1. Open source general purpose

  2. Proprietary general purpose

  3. Open source special purpose

  4. Proprietary special purpose

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Correct Option: A

Which of the following is not true?
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  1. PHP can be used to develop web applications.

  2. PHP makes a website dynamic

  3. PHP applications can not be compiled

  4. PHP can not be embedded into html.

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Correct Option: D

The most portable version of PHP tag that is compatible to embed in XML or XHTML too is:
technology web technology

  1. ?>

  4. NONE

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Correct Option: D

Which of the following variables is not a predefined variable?
technology web technology

  1. $get

  2. $ask

  3. $request

  4. $post

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Correct Option: B

You can define a constant by using the define() function. Once a constant is defined
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  1. You can define a constant by using the define() function. Once a constant is defined

  2. It can never be changed but can be undefined

  3. It can be changed but can not be undefined

  4. It can be changed and can be undefined

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Correct Option: A

You can define a constant by using the define() function. Once a constant is defined
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  1. You can define a constant by using the define() function. Once a constant is defined

  2. It can never be changed but can be undefined

  3. It can be changed but can not be undefined

  4. It can be changed and can be undefined

Show answer
Correct Option: A

Which of the following function returns the number of characters in a string variable?
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  1. count($variable)

  2. len($variable)

  3. strcount($variable)

  4. strlen($variable)

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Correct Option: D

When you need to obtain the ASCII value of a character which of the following function you apply in PHP?
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  1. chr( );

  2. asc( );

  3. ord( );

  4. val( );

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Correct Option: C

A variable $word is set to “HELLO WORLD”, which of the following script returns in title case?
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  1. echo ucwords($word)

  2. echo ucwords(strtolower($word)

  3. echo ucfirst($word)

  4. echo ucfirst(strtolower($word)

Show answer
Correct Option: B
Explanation:

To solve this question, the user should have knowledge of PHP string functions.

The ucwords() function is used to convert the first letter of each word to uppercase in a given string. The ucfirst() function converts the first letter of a string to uppercase. The strtolower() function converts a string to lowercase.

Option A: echo ucwords($word) will return "HELLO WORLD", where the first letter of each word is capitalized. This option is incorrect, as the question asks for the title case.

Option B: echo ucwords(strtolower($word)) will return "Hello World". This option is correct as it converts the whole string to lowercase using strtolower() and then capitalizes the first letter of each word using ucwords().

Option C: echo ucfirst($word) will return "HELLO WORLD", where only the first letter of the first word is capitalized. This option is incorrect as it doesn't convert the string to title case.

Option D: echo ucfirst(strtolower($word)) will return "Hello world". This option is incorrect as it only capitalizes the first letter of the first word and converts the string to lowercase, but doesn't capitalize the first letter of each word.

Therefore, the correct answer is:

The Answer is: B. echo ucwords(strtolower($word))