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You have a string in your PHP script and you want to find out how many characters it has. How would you do this?

  • strlen($string)
  • count($string)
  • length($string)
  • characters($string)
To find out the number of characters in a string in PHP, you can use the strlen() function. The strlen() function returns the length of a string in terms of the number of characters. Simply pass the string as an argument to strlen() like this: strlen($string). The function will return the length of the string, which corresponds to the number of characters. Learn more: https://www.php.net/manual/en/function.strlen.php
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What are some of the uses of class constants in PHP OOP?

  • Storing configuration
  • Defining error codes
  • Enum-like values
  • All of the above
Class constants in PHP OOP have various uses, including storing configuration values that remain constant throughout the execution of the script, defining error codes for consistent error handling, and creating enum-like values to represent a fixed set of options. Class constants provide a way to encapsulate and reuse such values within a class or across different instances of the class. For further information, visit: http://php.net/manual/en/language.oop5.constants.php
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You have a PHP script and you need to store information about a user session. How would you do this using a superglobal?

  • Use the $_SESSION superglobal.
  • Use the $_COOKIE superglobal.
  • Use the $_SERVER superglobal.
  • Use the $_GLOBALS superglobal.
The correct option is 1. To store information about a user session in PHP, you would use the $_SESSION superglobal. The $_SESSION superglobal is an associative array that allows you to store and access session variables. It is used to maintain session data across multiple page requests for a specific user. By storing data in $_SESSION, you can preserve user-specific information throughout their interaction with your web application. The session data is stored on the server and can be accessed across different pages or scripts as long as the session is active. Learn more: https://www.php.net/manual/en/reserved.variables.session.php
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The == operator in PHP is a type of ______ operator.

  • Comparison
  • Arithmetic
  • Assignment
  • Logical
The == operator in PHP is a type of comparison operator. It is used to compare two values for equality. The == operator checks if the values on both sides are equal, regardless of their data types. For example, $num1 == $num2 will return true if $num1 is equal to $num2, and false otherwise. Learn more: https://www.php.net/manual/en/language.operators.comparison.php
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Which of the following are true about the if statement in PHP?

  • It executes a block of code if a condition is true
  • It can test multiple conditions
  • It can be nested within another if statement
  • It can only be used with numerical values
The if statement in PHP executes a block of code if a condition is true. It allows you to test a condition and execute code based on the result. The if statement can handle both simple conditions and complex conditions involving logical operators. It can be used to test multiple conditions by using logical operators or by nesting if statements within each other. It is a fundamental control structure in PHP and is widely used for decision-making and flow control. Learn more: https://www.php.net/manual/en/control-structures.if.php
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In PHP, Regular Expressions are sequences of characters that form a search pattern, used mainly for ______.

  • Text manipulation
  • Generating random numbers
  • Sorting arrays
  • Mathematical calculations
In PHP, Regular Expressions are sequences of characters that form a search pattern, used mainly for text manipulation. Regular expressions provide a powerful and flexible way to search, match, and manipulate strings based on specific patterns. They can be used for tasks such as validating inputs, extracting data, performing string substitutions, and more. Regular expressions enable developers to define complex search patterns and apply them to strings, making it easier to work with textual data. Learn more: https://www.php.net/manual/en/book.regex.php
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What are some common use cases for FTP functions in PHP?

  • Uploading files to an FTP server, downloading files from an FTP server
  • String manipulation, database querying
  • Image processing, networking operations
  • All of the above
FTP functions in PHP have various use cases. Some common ones include uploading files to an FTP server, downloading files from an FTP server, synchronizing local and remote directories, retrieving directory listings, creating or deleting directories on an FTP server, and performing other file transfer operations. FTP functions enable PHP scripts to automate file transfers, backup data to remote servers, retrieve files from external sources, or build applications that interact with FTP servers. They provide flexibility and control over file transfer operations in PHP programming.
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You need to check if a variable in your PHP script is an integer. How would you do this?

  • is_int($variable)
  • is_string($variable)
  • is_float($variable)
  • is_numeric($variable)
To check if a variable is an integer in PHP, you can use the is_int() function. The is_int() function checks if a variable is of type integer. It returns true if the variable is an integer and false otherwise. This function is useful when you specifically need to verify that a variable is of integer type. Learn more: https://www.php.net/manual/en/function.is-int.php
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You have a PHP script and you need to move an uploaded file to a specific directory. How would you do this?

  • move_uploaded_file()
  • copy()
  • move_file()
  • attach_file()
To move an uploaded file to a specific directory in PHP, you can utilize the move_uploaded_file() function. This function moves the file to the desired directory. Check out: http://php.net/manual/en/function.move-uploaded-file.php
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PHP supports both single-line and multi-line comments.

  • TRUE
  • FALSE
PHP does indeed support both single-line and multi-line comments. Single-line comments can be denoted by double slashes (//) or a hash symbol (#), while multi-line comments can be enclosed between /* and */. Comments are essential for leaving notes, explaining code, or temporarily disabling blocks of code. They are ignored by the PHP interpreter, making them purely informational for developers. Learn more: https://www.php.net/manual/en/language.basic-syntax.comments.php
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