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print_r

Tags: PHP 5.x PHP 7.x PHP 8.x

print_r — Prints human-readable information about a variable

Description

print_r(
    mixed $value, 
    bool $return = false
): string|bool
print_r() displays information about a variable in a way that's readable by humans. print_r(), var_dump() and var_export() will also show protected and private properties of objects. Static class members will not be shown.

Parameters

value
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 Values

If given a string, int 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.