PRINT_R
Prints human-readable information about a variable
SYNTAX
print_r ( mixed $expression [, bool $return = FALSE ] ) : mixed
PARAMETERS
expression
The expression to be printed.
return
If you would like to capture the output of print_r(), use the return parameter. When this parameter is set to TRUE, print_r() will return the information rather than print it.
RETURN
If given a string, integer or float, the value itself will be printed. If given an array, values will be presented in a format that shows keys and elements. Similar notation is used for objects. When the return parameter is TRUE, this function will return a string. Otherwise, the return value is TRUE.
EXAMPLES
EXPRESSION | BOOL
EXPRESSION | INT
0
EXPRESSION | FLOAT
0
EXPRESSION | STRING
0
EXPRESSION | ARRAY
Array
(
[0] => 0
[1] => 1
[2] => Array
(
[0] => 0
[1] => 1
)
)
EXPRESSION | OBJECT | STANDARD CLASS
stdClass Object
(
[var] => 0
)
EXPRESSION | OBJECT | CUSTOM CLASS
myclass Object
(
[var] => 0
)
RETURN | TRUE
myclass Object
(
[var] => 0
)
RETURN | FALSE
myclass Object
(
[var] => 0
)
true