I want to print 1 to 10 numbers using recursion but its not working.
CODE
function table($num1) {
if( $num1 <= 10 ) {
echo $num1;
echo "<br>";
table($num1++);
}
}
$num = 1;
table($num);
Here's the error
Fatal error: Maximum function nesting level of '256' reached, aborting!
But when I am declaring $num1 as global its working fine. Please anyone tell me the reason behind it.
table($num1++) means please pass $num1 to table(), and then increase it by one. So this is not what you want.
You have to write table(++$num1) instead. It means increase $num1 first, then pass it to table().
Because you are passing a variable in copy. So the first variable has still 1 for value, and you are calling infinitely your function "table".
By default, for all variables (with the exception of objects) PHP makes a copy when passing it to a function/method. If you want to pass the same "in-memory" variable, you have to do it by reference.
$myVar=1;
myFunction($myVar);
Before, you declared your function like this:
function myFunction(&myVar) { ...}
Regards
function table($num) {
if( $num <= 10 ) {
echo $num;
echo "<br>";
table(++ $num);
}
}
$num = 1;
table($num);
table(++ $num) means increase $num first then pass to table function
function table($value) {
echo $value;
echo "<br>";
$num1=$value+1;
if($num1<=10){
table($num1);
}
}
$num = 1;
table($num);
