print_r

PHP 4, PHP 5, PHP 7, PHP 8
print_r - Prints human-readable information about a variable
Manual
Code Examples

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.

Notes

Note:

When the return parameter is used, this function uses internal output buffering prior to PHP 7.1.0, so it cannot be used inside an ob_start callback function.

Related Functions

Example of print_r

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