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Recursive implementation of binary search involves breaking the problem into _______ subproblems until a solution is found.

  • Five
  • Four
  • Three
  • Two
Recursive implementation of binary search involves breaking the problem into two subproblems at each step, making it a logarithmic algorithm with a time complexity of O(log n), where 'n' is the number of elements.
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You need to retrieve the error message after an error occurs during the execution of a miscellaneous function in your PHP script. How would you do this?

  • Use the error_get_last() function to retrieve the last PHP error message
  • Use the error_reporting() function to set the error reporting level
  • Use the mysqli_error() function to retrieve the error message
  • Use the pdo_error() function to retrieve the error message
If there is an error during the execution of a miscellaneous function in PHP, you can use the error_get_last() function to retrieve the last PHP error message. This function returns an array containing information about the last error that occurred. You can then access the error message using the 'message' key of the returned array. For example, $error = error_get_last(); $errorMessage = $error['message']; retrieves the error message. This allows you to retrieve and handle the error message after an error occurs during the execution of a miscellaneous function in your PHP script.
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In PHP, you can open a file using the fopen() function, which takes the path to the file and the mode as the ______.

  • delimiter
  • argument
  • parameter
  • variable
The fopen() function in PHP takes the path to the file as the first argument and the mode as the second argument. The mode specifies how the file should be opened, such as read-only, write-only, or read-write.
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How is a constant defined in a PHP script?

  • A constant is defined in a PHP script using the define() function.
  • A constant is defined in a PHP script using the var keyword.
  • A constant is defined in a PHP script by prefixing the variable name with a $ symbol.
  • A constant is defined in a PHP script using the set_constant() function.
A constant is defined in a PHP script using the define() function. The define() function takes two arguments: the constant name (a string) and its value. For example, you can define a constant named MY_CONSTANT with a value of 123 using the following syntax: define('MY_CONSTANT', 123);. Once defined, constants cannot be changed or redefined during the execution of the script. They are typically used to represent values that remain constant throughout the script execution, such as configuration settings or mathematical constants. Constants are case-sensitive by default, but you can make them case-insensitive by passing true as the third argument to the define() function. It's important to note that constants do not require a $ symbol like variables do.
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PHP is primarily used for which type of development?

  • Mobile application development
  • Desktop software development
  • Web development
  • Game development
PHP is primarily used for server-side web development. Unlike static HTML, PHP can interact with databases, manage cookies, process forms, and dynamically generate HTML content. Its integration with various database systems and its ability to easily handle dynamic content makes it a go-to language for web development. To learn more, visit: https://www.php.net/manual/en/intro-whatis.php
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You have a PHP script and you need to execute a query in a MySQL database. How would you do this?

  • Use the mysqli_query function to execute the query in the MySQL database.
  • Use the mysql_query function to execute the query in the MySQL database.
  • Use the pdo_query function to execute the query in the MySQL database.
  • Use the execute_query function to execute the query in the MySQL database.
To execute a query in a MySQL database in PHP, you can use the mysqli_query function. This function takes two parameters: the connection object and the SQL query. It executes the query against the connected MySQL database and returns a result object. The mysqli_query function is part of the mysqli extension in PHP. Remember to use prepared statements or proper escaping techniques to prevent SQL injection vulnerabilities when executing user-supplied data as part of the query.
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What are some common practices in PHP cookie handling?

  • Setting secure and HTTP-only flags
  • Expiring cookies after a certain time
  • Encrypting cookie values
  • All the options
When handling cookies in PHP, it's important to follow best practices. This includes sanitizing user input to prevent security vulnerabilities, setting secure and HTTP-only flags to enhance security, expiring cookies after a certain time to manage their lifespan, and encrypting sensitive cookie values to protect data privacy. These practices help ensure the proper handling and security of cookies in PHP applications.
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The foreach loop in PHP is used exclusively for arrays.

  • Index
  • Element
  • Key
  • Value
The foreach loop in PHP is used to iterate over each element in an array. It allows you to access both the keys and values of the array elements during each iteration. The "key" variable represents the key/index of the current element, while the "value" variable holds the value of the element. This loop construct is particularly useful when you need to process each element of an array without explicitly managing the iteration counter. Learn more: https://www.php.net/manual/en/control-structures.foreach.php
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What is the difference between the functions strstr() and stristr()?

  • strstr() is case-sensitive, while stristr() is case-insensitive
  • strstr() returns the portion of the string after the first occurrence of a substring, while stristr() returns the portion of the string from the first occurrence of a substring onwards
  • There is no difference, both functions perform the same operation
  • stristr() returns a Boolean value, while strstr() returns a string value
The strstr() function in PHP returns the portion of a string starting from the first occurrence of a substring, while stristr() is case-insensitive in its search. They differ in case-sensitivity. Learn more: http://php.net/manual/en/function.strstr.php
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What PHP function is used to return the highest value from a list of numbers?

  • max()
  • min()
  • sort()
  • array_sum()
The max() function in PHP is used to return the highest value from a list of numbers. It accepts either an array of numbers or multiple arguments and returns the maximum value. This function is useful when you need to find the highest value among a set of numbers. Learn more: https://www.php.net/manual/en/function.max.php
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