How to print a variable in php

How do I print a variable in PHP?

You can display the value in a PHP variable on a web page by using any of the following statements: echo, print, print_r, or var_dump.

How do you print the value of a variable?

The following line shows how to output the value of a variable using printf. printf(“%d”, b); The %d is a placeholder that will be replaced by the value of the variable b when the printf statement is executed. Often, you will want to embed the value within some other words.

Can we use print in PHP?

echo and print are more or less the same. They are both used to output data to the screen. The differences are small: echo has no return value while print has a return value of 1 so it can be used in expressions.

How do you determine the datatype of a variable in PHP?

The gettype() function is an inbuilt function in PHP which is used to get the type of a variable. It is used to check the type of existing variable.

Possible values for the returned string are:

  1. boolean.
  2. integer.
  3. double (for historical reasons “double” is returned in case of float)
  4. string.
  5. array.
  6. object.
  7. resource.
  8. NULL.

What is Print_r?

PHP | print_r() Function

The print_r() function is a built-in function in PHP and is used to print or display information stored in a variable. … This parameter is of boolean type whose default value is FALSE and is used to store the output of the print_r() function in a variable rather than printing it.

How a variable is declared in PHP?

All variables in PHP start with a $ 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 in PHP can only contain alpha-numeric characters and underscores ( A-z , 0-9 , and _ ).

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How do I use fprintf?

The fprintf function prints an array of characters to the screen: fprintf(‘Happy Birthdayn’);

The display command:

  1. disp is a function that will display a value.
  2. name = ‘Jim’;
  3. disp(name);
  4. alternative to the fprintf statement.
  5. prefer to use fprintf as we control theFormatting.

How do I printf a pointer?

You can print a pointer value using printf with the %p format specifier. To do so, you should convert the pointer to type void * first using a cast (see below for void * pointers), although on machines that don’t have different representations for different pointer types, this may not be necessary.

How do you print backslash?

C uses backslash (virgule, ) as an escape character to change the meaning of the next character after it. Thus, to print a double- quote you type in backslash double-quote. To print a backslash, you must escape it by typing another backslash in front of it.

What is the correct way to end PHP statement?

Instruction separation ¶

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.

How do I run a PHP file?

Go to browser: http://localhost/ProjectName/filename.php. If you have apache running, put your file in server folder for html files and then call it from web-browser (Like http://localhost/myfile.php ).

How do you print quotes in PHP?

6 Answers. You need to escape the quotes in the string by adding a backslash before ” . You can just forgo the quotes for alphanumeric attributes: echo “<font color=red> XHTML is not a thing anymore.

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What are the types of variables in PHP?

PHP has many types of variables, but the most basic variable types are integer (whole numbers), float (real numbers), strings, and booleans. PHP also has arrays and objects which we will explain in other tutorials.

What is type hinting in PHP?

Since PHP 5 you can use type hinting to specify the expected data type of an argument in a function declaration. When you call the function, PHP will check whether or not the arguments are of the specified type. If not, the run-time will raise an error and execution will be halted.

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