Difference between revisions of "PHP 3"
From Ilianko
(→scope) |
(→scope) |
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function sumNumbers($a, $b) { | function sumNumbers($a, $b) { | ||
− | echo $a + $b.' | + | echo $a + $b.'<br />'; |
$a = 333; | $a = 333; | ||
− | echo $a.' | + | echo $a.'<br />'; |
} | } | ||
− | echo $a.' | + | echo $a.'<br />'; |
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function sumNumbers(&$a, $b) { | function sumNumbers(&$a, $b) { | ||
− | echo $a + $b.' | + | echo $a + $b.'<br />'; |
$a = 333; | $a = 333; | ||
− | echo $a.' | + | echo $a.'<br />'; |
} | } | ||
− | echo $a.' | + | echo $a.'<br />'; |
Revision as of 13:27, 20 October 2013
Един код извикваме от много места
над 3500 вградени функции наименование букви и цифри
Contents
Функции
function sumNumbers() { echo 2+2 } sumNumbers();
параметри
function sumNumbers($a,$b) { echo $a+$b; } sumNumbers(2,2);
параметри по подразбиране
function sumNumbers($a) { echo $a+3; } sumNumbers(2);
function sumNumbers($a, $b = 3) { echo $a+$b; } sumNumbers(2); sumNumbers(2,4);
връщане на резултати
function sumNumbers($a, $b=3) { $a = $a + $b; return $a; }
$result = sumNumbers(2); echo $result;
function sumNumbers($a, $b=3) { return $a; echo $a + $b; }
рекурсия
$myArray = array( 1,
array( 2,
3,
4 ),
'five',
array( 'six',
'7',
array('third array',
'third array second element')));
function listArray($array, $step=0) {
if( is_array($array)){
foreach($array as $key => $value){
echo 'Array index: '.$key;
listArray($value);
}
}
else
echo " value $array <br />";
}
listArray($myArray)
scope
$a = 3; $b = 4; sumNumbers($a, $b); function sumNumbers($a, $b) { echo $a + $b.'<br />'; $a = 333; echo $a.'<br />'; } echo $a.'<br />';
$a = 3; $b = 4; sumNumbers($a, $b); function sumNumbers(&$a, $b) { echo $a + $b.'<br />'; $a = 333; echo $a.'<br />'; } echo $a.'<br />';