Podcast
Questions and Answers
In PHP, which function is used to display text?
In PHP, which function is used to display text?
- display_text()
- print_r()
- printf()
- echo() (correct)
What is the purpose of the 'date()' function in PHP?
What is the purpose of the 'date()' function in PHP?
- To display the date of the last server restart
- To retrieve the current server date
- To format and display the current server date and time (correct)
- To create a new date variable
Which method is used to pass variables in PHP through the URL?
Which method is used to pass variables in PHP through the URL?
- PUT method
- DATA method
- GET method (correct)
- POST method
What does the 'include' statement do in PHP?
What does the 'include' statement do in PHP?
In PHP, what does the 'define()' function do?
In PHP, what does the 'define()' function do?
Which type of array in PHP uses named keys that you assign to them?
Which type of array in PHP uses named keys that you assign to them?
What is the purpose of the 'exit()' function in PHP?
What is the purpose of the 'exit()' function in PHP?
How can environment variables be accessed in PHP?
How can environment variables be accessed in PHP?
Which of these is used to stop the execution of a script in PHP?
Which of these is used to stop the execution of a script in PHP?
What tags are used to display bold text in PHP?
What tags are used to display bold text in PHP?
In PHP, how can you convert a variable into a primitive type by casting?
In PHP, how can you convert a variable into a primitive type by casting?
Which function in PHP returns true if the variable is empty?
Which function in PHP returns true if the variable is empty?
What is the syntax for assigning a variable identifier the value of another variable in PHP?
What is the syntax for assigning a variable identifier the value of another variable in PHP?
In PHP, what is the purpose of the isset($var) function?
In PHP, what is the purpose of the isset($var) function?
What does the following syntax do in PHP: $name_variable = 3;
What does the following syntax do in PHP: $name_variable = 3;
In PHP, what is the purpose of the unset($var) function?
In PHP, what is the purpose of the unset($var) function?
In PHP, what does $nbr = (int)$str; do?
In PHP, what does $nbr = (int)$str; do?
What are the three sorts of 'data' that can be stored in a variable in PHP?
What are the three sorts of 'data' that can be stored in a variable in PHP?
$str = '12'; $nbr = (int)$str; // What does $nbr equal to after this in PHP?
$str = '12'; $nbr = (int)$str; // What does $nbr equal to after this in PHP?
Flashcards
PHP echo() function
PHP echo() function
Displays text output in PHP.
PHP date() function
PHP date() function
Formats and displays the current server date and time.
PHP GET method
PHP GET method
Passes variables through the URL.
PHP include statement
PHP include statement
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PHP define() function
PHP define() function
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Associative array
Associative array
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PHP exit() function
PHP exit() function
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PHP environment variables
PHP environment variables
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PHP exit keyword
PHP exit keyword
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PHP bold text tags
PHP bold text tags
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PHP variable casting (int)
PHP variable casting (int)
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PHP empty() function
PHP empty() function
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PHP variable assignment with $this
PHP variable assignment with $this
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PHP isset() function
PHP isset() function
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PHP variable assignment
PHP variable assignment
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PHP unset() function
PHP unset() function
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Study Notes
PHP Functions and Syntax
- The
echofunction is used to display text in PHP.
Date and Time
- The
date()function returns the current date and time.
Passing Variables
- Variables can be passed through the URL using the GET method.
Including Files
- The
includestatement is used to insert the contents of one PHP file into another.
Defining Constants
- The
define()function is used to define a constant.
Array Types
- An associative array is a type of array that uses named keys that are assigned to them.
Script Execution
- The
exit()function is used to stop the execution of a script.
Environment Variables
- Environment variables can be accessed in PHP using the
$_SERVERor$_ENVsuperglobals.
Stopping Script Execution
- The
die()orexit()function is used to stop the execution of a script.
Displaying Bold Text
- The
<b>tag is used to display bold text in PHP.
Casting Variables
- A variable can be converted to a primitive type by casting using the
(type)syntax.
Checking Variable Emptiness
- The
empty()function returns true if the variable is empty.
Variable Assignment
- The syntax for assigning a variable identifier the value of another variable is
$var2 = $var1.
Variable Existence
- The
isset()function checks if a variable is set and is not null.
Variable Unsetting
- The
unset()function is used to unset a variable. - The
unset()function sets a variable to null.
Type Casting
$nbr = (int)$str;casts the string$strto an integer and assigns it to$nbr.
Data Types
- Three types of data that can be stored in a variable in PHP are strings, integers, and floats.
- After
$str = '12'; $nbr = (int)$str;,$nbrequals12.
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Description
Test your knowledge of PHP language and server-side web development concepts such as displaying text, using comments, functions like date(), passing variables with get and post, including external files, working with variables and constants, control instructions, dynamic functions, environment variables, arrays, and associative arrays.
