Introduction and examples of php5.3 goto functions

The

 goto operator can be used to jump to a specified position in a program. The target location can be marked with a colon for the target name.

The goto operator is added after php5.3+ to jump to another location in the program; the usage is simple: goto followed by a flag with the target location, with a colon marked at the target, as follows:     Copy code: Goto A; Echo ' the Script house '; A:     echo ' http://www.jb51.net ';     But Goto's target location can only be the same file and scope "can not jump to a function and class method", of course, it can jump out of the loop, but can not jump into the loop:     Copy code code as follows: <?php for ($i = 0; $i < 3; $i + +) {    echo $i. ' <br> ';     if ($i = = 1) goto end; End:      Echo ' directly ended '; The goto operator can be used to jump to a specified position in a program. The target location can be marked with a colon for the target name. The Goto in PHP has a certain limit and can only jump in the same file and scope, which means you can't jump out of a function or class method, and you can't skip to another function. You also can't jump into any loops or switch structures. A common use is to jump out of loops or switch, instead of multiple layers of break.   Code as follows: <?php goto A; Echo ' Foo ';   A:echo ' bar ';?>     The above routines will output: Bar   goto Jump Loop Sample code is as follows: <?php for ($i =0, $j =50; $i <100; $i + +) {  while ($j-) {    if ($j ==17) goto end;   }  } echo "i = $i"; End:echo ' J hit ';?>     The above routines will output: J hit   The following writing is invalid     code as follows: <?php Goto Loop; For ($i =0, $j =50 $i <100; $i + +) {   while ($j--) {    loop:  }} echo "$i = $i";?>     above routines output:    fatal Error : ' Goto ' into loop or switch statement are disallowed in script on line 2