Php goto
From w3cyberlearnings
Contents |
goto
goto jump to another section of the program.
- goto can not use to jump out of the function or method
- goto must be within the same block or section of the program
- goto can not jump to loops or switch structure
Syntax
goto A3; echo 'Now here'; A3: echo 'A3 is hear';
NOTE
By using goto, the program will be difficult to maintain. If you must you goto, and it is only your option than use it.
Example 1
<?php goto M; echo 'Hello World!'; M: echo 'great M'; ?>
Output
great M
Example 2: goto within the while loop
- This is for demonstratio only, if you can use other methods than goto, please use so.
<?php
$n = 8;
while ($n-- > 0) {
if ($n % 2 == 0) {
goto n_mod_2_0;
} else {
goto n_mod_2_not_0;
}
n_mod_2_0: {
echo $n . ' % 2==0 <br/>';
}
n_mod_2_not_0: {
echo $n . ' % 2 != 0<br/>';
}
}
?>
Output
7 % 2 != 0 6 % 2==0 6 % 2 != 0 5 % 2 != 0 4 % 2==0 4 % 2 != 0 3 % 2 != 0 2 % 2==0 2 % 2 != 0 1 % 2 != 0 0 % 2==0 0 % 2 != 0
