Php/docs/control-structures.goto
goto
(PHP 5 >= 5.3.0, PHP 7, PHP 8)
Image courtesy of » xkcd
The goto operator can be used to jump to another
section in the program. The target point is specified by a label
followed by a colon, and the instruction is given as
goto followed by the desired target label. This
is not a full unrestricted goto. The target
label must be within the same file and context, meaning that you cannot jump
out of a function or method, nor can you jump into one. You also
cannot jump into any sort of loop or switch structure. You may jump
out of these, and a common use is to use a goto
in place of a multi-level break.
Example #1 goto example
<?phpgoto a;echo 'Foo'; a:echo 'Bar';?>
The above example will output:
Bar
Example #2 goto loop example
<?phpfor($i=0,$j=50; $i<100; $i++) { while($j--) { if($j==17) goto end; } }echo "i = $i";end:echo 'j hit 17';?>
The above example will output:
j hit 17
Example #3 This will not work
<?phpgoto loop;for($i=0,$j=50; $i<100; $i++) { while($j--) { loop: }}echo "$i = $i";?>
The above example will output:
Fatal error: 'goto' into loop or switch statement is disallowed in script on line 2
