A detailed introduction to the goto operator in PHP

PHP goto operator

Can be used to jump to another location in the program. The position can be marked with the target name plus a colon, and the jump instruction is the position marker that the target is connected to after Goto

Some restrictions on the use of goto operators

The target location can only be in the same file and scope

Cannot "jump out" a function and a method of a class

Cannot "jump in" to another function

Cannot "jump" into any loop or switch structure

Can "jump out" the loop or switch, the general usage is to replace the multi-layer break

Simple and practical case

Goto  Target;echo  ' Hi world '; Target:echo  ' Hello World ';

Results

Hello World

$i = 0; $j = 50; for ($i <;  $i + +) {while ($j-) {if ($j = =) goto  end;}  } echo  "i =  $i"; End:echo  ' J hit 17 ';

Results

J hit 17