Which of the following are valid string sequence of characters in PHP?
PHP – Strings
- n is replaced by the newline character.
- r is replaced by the carriage-return character.
- t is replaced by the tab character.
- $ is replaced by the dollar sign itself ($)
- ” is replaced by a single double-quote (“)
- \ is replaced by a single backslash ()
Which is a valid character for string a PHP function name?
A valid function name starts with a letter or underscore, followed by any number of letters, numbers, or underscores. As a regular expression, it would be expressed thus: ^[a-zA-Z_x80-xff][a-zA-Z0-9_x80-xff]*$ .
Which is the valid string data?
They can hold any sequence of letters, digits, punctuation, and other valid characters. Typical character strings are names, descriptions, and mailing addresses. Although you can store any value in a character string, use character strings only if other data types are inappropriate. … The default value of n is 1.
What is the full form of PHP?
PHP (recursive acronym for PHP: Hypertext Preprocessor ) is a widely-used open source general-purpose scripting language that is especially suited for web development and can be embedded into HTML.
What is PHP call function?
A PHP function provides code that a PHP script can call to perform a task, such as Count(), file_get_contents(), and header(). The PHP language supports both procedural and object-oriented programming paradigms.
What is PHP function with examples?
PHP functions are similar to other programming languages. A function is a piece of code which takes one more input in the form of parameter and does some processing and returns a value. … They are built-in functions but PHP gives you option to create your own functions as well.
What is PHP Heredoc used for?
Heredoc PHP syntax is a way to write large bloc of text inside PHP, without the classic single quote, double quotes delimiters. It relies on <<< and a token that will also mark the end of the string.
What is the correct way to end a PHP statement?
As in C or Perl, PHP requires instructions to be terminated with a semicolon at the end of each statement. The closing tag of a block of PHP code automatically implies a semicolon; you do not need to have a semicolon terminating the last line of a PHP block.
Which is the right way of declaring a variable in PHP?
A variable starts with the $ sign, followed by the name of the variable. A variable name must start with a letter or the underscore character. A variable name cannot start with a number. A variable name can only contain alpha-numeric characters and underscores (A-z, 0-9, and _ )
Which one is not data type in PHP?
The special resource type is not an actual data type. It is the storing of a reference to functions and resources external to PHP. A common example of using the resource data type is a database call.