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print_r
Description
void print_r ( mixed expression)print_r() displays information about a variable in a way that's readable by humans. 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.
Remember that print_r() will move the array pointer to the end. Use reset() to bring it back to beginning.
Tip: Jako pro cokoliv, co posφlß svΘ v²sledky p°φmo do prohlφ╛eΦe, m∙╛ete pou╛φt funkce pro °φzenφ v²stupu k zachycenφ v²stupu tΘto funkce a jeho ulo╛enφ - nap°φklad - do °et∞zce (string).
<pre>
<?php
$a = array ('a' => 'apple', 'b' => 'banana', 'c' => array ('x','y','z'));
print_r ($a);
?>
</pre> |
Which will output:
<pre>
Array
(
[a] => apple
[b] => banana
[c] => Array
(
[0] => x
[1] => y
[2] => z
)
)
</pre> |
Poznßmka: Prior to PHP 4.0.4, print_r() will continue forever if given an array or object that contains a direct or indirect reference to itself. An example is print_r($GLOBALS) because $GLOBALS is itself a global variable that contains a reference to itself.
See also ob_start(), var_dump(), and var_export().
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