PHP - print_r

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Metóda - print_r

(PHP 4, PHP 5, PHP 7)

The print_r() function prints information about a variable in a way it is readable by humans.

This function also prints protected and private variables. However, static class members will not be shown.

Procedurálne

• function print_r (mixed $expression, bool $return = false) : mixed

Parametre

Názov	Dátový typ	Predvolená hodnota	Popis
$expression	mixed		The variable to be printed.
$return	bool	false	If we want to capture the output from the function, we have to set this parameter to TRUE. Otherwise, the function just prints the output.

Mávratovej hodnoty

Vracia: mixed

If the second parameter is set to TRUE, the function returns an output. Otherwise, it returns TRUE.

Príklady

<?php
echo ('<pre>');
print_r(['a', 'b', 'content' =>[1, '2', true, null], 'site' => 'ICT']);
echo ('</pre>');