goto
(PHP 5 >= 5.3.0, PHP 7)
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
<?php
goto?a;
echo?'Foo';
?
a:
echo?'Bar';
?>The above example will output:
BarExample #2 goto loop example
<?php
for($i=0,$j=50;?$i<100;?$i++)?{
??while($j--)?{
????if($j==17)?goto?end;?
??}??
}
echo?"i?=?$i";
end:
echo?'j?hit?17';
?>The above example will output:
j hit 17Example #3 This will not work
<?php
goto?loop;
for($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 2Note: The goto operator is available as of PHP 5.3.
← include_once
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