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functions functions ,
include functions ,
variable functions ,
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Връщането на стойности става посредством незадължителната инструкция за връщане (return). Позволено е връщането на всякакви типове, включително списъци и обекти. Това кара функцията да спре незабавно изпълнението си и да предаде контрола обратно на реда, от който е била извикана. Погледнете return() за повече информация.
Example #1 Употреба на return()
<?php
function square($num)
{
return $num * $num;
}
echo square(4); // извежда '16'.
?>
Функцията не може да връща множество стойности, но подобен ефект може да бъде постигнат чрез връщането на масив.
Example #2 Връщане на масив, с цел получаване на множество стойности
<?php
function small_numbers()
{
return array (0, 1, 2);
}
list ($zero, $one, $two) = small_numbers();
?>
За да върнете референция от функция, използвайте референтния оператор & както при декларирането на функцията, така и при присвояването на връщаната стойност на променливата:
Example #3 Връщане на референция от функция
<?php
function &returns_reference()
{
return $someref;
}
$newref =& returns_reference();
?>
За повече информация относно референциите, разгледайте раздел Референции.
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