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In PHP, you can create a file using the fopen() function with 'w' as the mode, which will create the file if it doesn't exist and open it for ______.

  • reading
  • writing
  • appending
  • deleting
In PHP, using the 'w' mode with the fopen() function allows you to create a file if it doesn't exist and open it for writing. This mode truncates the file if it already exists, so caution should be exercised.
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If the file to be included using the include statement in PHP is not found, the script will ______.

  • generate a warning and continue execution
  • generate a fatal error and stop execution
  • automatically search for the file in other directories
  • silently fail and continue execution
If the file to be included using the include statement in PHP is not found, a warning is generated, but script execution continues. This behavior allows the script to continue executing even if a non-essential file is not found.
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How is it possible to know the number of rows returned in the result set?

  • You can use the mysqli_num_rows() function to retrieve the number of rows returned by a MySQL query.
  • You can use the mysql_count_rows() function to retrieve the number of rows returned by a MySQL query.
  • You can use the mysql_num_rows() function to retrieve the number of rows returned by a MySQL query.
  • You can use the mysql_get_rows() function to retrieve the number of rows returned by a MySQL query.
To know the number of rows returned in the result set of a MySQL query, you can use the mysqli_num_rows() function in PHP. This function returns the number of rows in the result set as an integer. It is commonly used after executing a SELECT query to determine the number of rows returned by the query. For example, you can use mysqli_num_rows($result) to get the number of rows returned by a query stored in the $result variable. It's important to note that this function works with the MySQLi extension in PHP. If you are using the deprecated MySQL extension or the PDO extension, you need to use the respective functions provided by those extensions to retrieve the number of rows.
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Which of the following PHP data types can hold multiple values?

  • int
  • boolean
  • array
  • None of the above
The array data type in PHP can hold multiple values. Arrays are used to store collections of values, and they can hold elements of different data types. An array allows you to organize and access multiple values using keys or indexes. Learn more: https://www.php.net/manual/en/language.types.array.php
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The filter_var_array() function in PHP allows you to filter ______ inputs at once.

  • single
  • multiple
  • individual
  • specific
The filter_var_array() function in PHP allows you to filter multiple inputs at once. It takes an input array and applies a specified filter to each element of the array. For further information, visit: http://php.net/manual/en/function.filter-var-array.php
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What are some steps you might take when creating a MySQL table using PHP?

  • Connect to the MySQL server, select the database, execute a CREATE TABLE query, handle errors, close the connection
  • Connect to the MySQL server, execute a SELECT query, handle errors, close the connection
  • Connect to the MySQL server, execute an INSERT INTO query, handle errors, close the connection
  • Connect to the MySQL server, execute a DELETE query, handle errors, close the connection
When creating a MySQL table using PHP, you would typically follow these steps: 1. Connect to the MySQL server using the appropriate credentials. 2. Select the database where you want to create the table. 3. Execute a CREATE TABLE query using the mysqli_query function. 4. Check the return value of the mysqli_query function to handle any errors that may have occurred during the query execution. 5. Close the connection to the MySQL server using the mysqli_close function. These steps ensure that you establish a connection, create the table, handle any errors, and properly close the connection when you're done.
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You are writing a PHP script and you need to collect data sent in the URL's query string. How would you do this using the $_GET superglobal?

  • Access the data using the $_GET['key'] syntax.
  • Access the data using the $_GET->$key syntax.
  • Access the data using the $_GET['key'] method.
  • Access the data using the $_GET->key method.
To collect data sent in the URL's query string in PHP using the $_GET superglobal, you can access the data using the $_GET['key'] syntax, where 'key' represents the name of the parameter in the query string. For example, if the URL is "example.com/page.php?id=123", you can access the value "123" by using $_GET['id']. This allows you to retrieve and process the data passed through the URL using the GET method. Learn more: https://www.php.net/manual/en/reserved.variables.get.php
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The === operator in PHP checks if the values of two operands are ______ and of the ______ type.

  • Equal and same
  • Equal and different
  • Not equal
  • Not equal and same
The === operator in PHP checks if the values of two operands are equal and of the same type. It performs a strict comparison, meaning that it not only checks for equality but also ensures that the data types of the values are the same. For example, $num1 === $num2 will return true if $num1 is equal to $num2 and both have the same data type, and false otherwise. Learn more: https://www.php.net/manual/en/language.operators.comparison.php
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You need to create a file in your PHP script, write to it, and ensure that the file is closed properly after writing. How would you do this?

  • Use the fopen() function with 'w' mode to create the file and obtain a file handle, then use the fwrite() function to write content to the file. Finally, use the fclose() function to close the file.
  • Use the file_put_contents() function to create the file and write content to it. The function handles file creation and writing, so no explicit file handle or closing is required.
  • Use the touch() function to create the file, then use the fwrite() function to write content to the file. Finally, use the fclose() function to close the file.
  • Use the mkdir() function to create a directory instead of a file.
To create a file, write to it, and ensure proper closing in PHP, you would use the fopen() function with 'w' mode to create the file and obtain a file handle. Then, you can use the fwrite() function with the file handle to write content to the file. Finally, you would use the fclose() function to close the file and release the associated resources. This ensures that the file is created, written to, and closed properly.
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You need to retrieve the error message after an email sending operation fails in your PHP script. How would you do this using mail functions?

  • Use the error_get_last() function to retrieve the last PHP error message
  • Use the error_reporting() function to set 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 mail 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 email sending operation fails in your PHP script.
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