PHP Quiz (Set 6) - Upskilling Engineers

PHP (Set 6)

1 / 9

What is the purpose of the 'implode()' function when used with an associative array in PHP?

To combine two or more arrays into a single array

To replace occurrences of a substring with another substring

To join elements of an array into a string using a specified delimiter

To convert an associative array into a string

2 / 9

What is the purpose of the 'array_pop()' function in PHP?

To remove the first element from an array

To remove the last element from an array and return its value

To add an element to the beginning of an array

To reverse the order of elements in an array

3 / 9

What does the 'unset()' function do in PHP?

Deletes an entire array

Deletes a specific element from an array

Deletes a variable

Deletes a session variable

4 / 9

What is the purpose of the 'array_column()' function in PHP?

To retrieve the values of a specific column from a multi-dimensional array

To retrieve the keys of a specific column from a multi-dimensional array

To combine two arrays and remove duplicates

To reverse the order of elements in an array

5 / 9

What is the purpose of the 'array_key_exists()' function in PHP?

To check if a key exists in an array

To check if a value exists in an array

To retrieve the keys of an array

To retrieve the values of an array

6 / 9

What is the purpose of the 'trim()' function in PHP?

To remove leading and trailing whitespace from a string

To replace occurrences of a substring with another substring

To split a string into an array of substrings based on a delimiter

To convert a string to uppercase

7 / 9

Which of the following is true about 'include()' and 'require()' in PHP?

'include()' generates a fatal error if the file is not found, while 'require()' only generates a warning

'require()' generates a fatal error if the file is not found, while 'include()' only generates a warning

'include()' and 'require()' both generate fatal errors if the file is not found

'include()' and 'require()' both generate warnings if the file is not found

8 / 9

What is the purpose of the 'is_numeric()' function in PHP?

To check if a variable is a number

To check if a variable is a string

To check if a variable is an array

To check if a variable is empty

9 / 9

What is the purpose of the 'array_shift()' function in PHP?

To remove the last element from an array

To remove the first element from an array and return its value

To add an element to the beginning of an array

To reverse the order of elements in an array

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