Any way to break if statement in PHP

Question

Is there any command in PHP to stop executing the current or parent if statement  same as break or break 1  for switch loop  For example   arr array  a   b    foreach  arr as  val      break    echo  test      echo  finish     in the above code PHP will not do echo  test   and will go to echo  finish    I need this for if   a  test   if  test    a      break    echo  yes      I don t want this line or lines after to be executed  without using another if   echo  finish     I want to break the if statement above and stop executing echo  yes   or such codes which are no longer necessary to be executed  there may be or may not be an additional condition  is there way to do this   Update  Just 2 years after posting this question  I grew up  I learnt how code can be written in small chunks  why nested if s can be a code smell and how to avoid such problems in the first place by writing manageable  small functions

User · Answer

Don t worry about other users comments  I can understand you  SOMETIMES when developing this  fancy  things are required  If we can break an if  a lot of nested ifs won t be necessary  making the code much more clean and aesthetic   This sample code illustrate that CERTAINS SITUATIONS where breaked if can be much more suitable than a lot of ugly nested ifs    if you haven t faced that certain situation does not mean it doesn t exists   Ugly code  if process x              do a lot of other things         if process y                   do a lot of other things              if process z                        do a lot of other things                     SUCCESS                         else                  clean all processes                           else             clean all processes              else        clean all processes         Good looking code  do      if   process x           clean all processes     break          do a lot of other things       if   process y           clean all processes     break          do a lot of other things       if   process z           clean all processes     break          do a lot of other things         SUCCESS       while  0     As  NiematojakTomasz says  the use of goto is an alternative  the bad thing about this is you always need to define the label  point target

User · Answer

You could use a do-while false         lt  php     do if   foo                 Do something first              Shall we continue with this block  or exit now        if   abort if block  break            Continue doing something           while  false         gt    as described in http   php net manual en control-structures if php 90073

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The simple answer is that no  there isn t a way to break from an if statement without completely stopping the execution  via exit   Other solutions won t work for me because I can t change the structure of the if statement  since I m injecting code into a plugin  like so   if   condition          Code and variables I want to use       Code I have control over       Code I don t want to run      More code I want to use

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Encapsulate your code in a function  You can stop executing a function with return at any time

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proper way to do this    try      if   process x              throw new Exception  process x failed                  do a lot of other things         if   process y              throw new Exception  process y failed                  do a lot of other things         if   process z              throw new Exception  process z failed                  do a lot of other things           SUCCESS     catch Exception  ex       clean all processes        After reading some of the comments  I realized that exception handling doesn t always makes sense for normal flow control  For normal control flow it is better to use  If else    try    if  process x    amp  amp  process y    amp  amp  process z              all processes successful        do something     else         one of the processes failed     clean all processes         catch Exception ex        one of the processes raised an exception   clean all processes        You can also save the process return values in variables and then check in the failure exception blocks which process has failed

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What about using ternary operator    lt  php     Example usage for  Ternary Operator   action    empty   POST  action        default      POST  action      gt    Which is identical to this if else statement    lt  php  if  empty   POST  action           action    default      else       action     POST  action         gt

User · Answer

a   1   switch  a       case  1        if    condition1         break             if    condition2         break             if    condition3         break            In this way I got what I want   I use a switch only has a definite case and then use break in case to choose if condition   The reason why I use the break    condition1 and condition2 may both satisfy  in that situation only condition1 is applied  IF is selective according the order

User · Answer

Just move the code that is not supposed to be executed to else elseif branch  I don t really see why would you want to do what you re trying to do

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i have a simple solution without lot of changes  the initial statement is      I want to break the if statement above and stop executing echo  yes   or such codes which are no longer necessary to be executed  there may be or may not be an additional condition  is there way to do this    so  it seem simple  try code like this    a  test   if  test    a      if  1  0         echo  yes      this line while never be executed            and can be reexecuted simply by changing if  1  0  to if  1  1         echo  finish     if you want to try without this code  it s simple  and you can back when you want  another solution is comment blocks   or simply thinking and try in another separated code and copy paste only the result in your final code  and if a code is no longer nescessary  in your case  the result can be   a  test   echo  finish     with this code  the original statement is completely respected      and more readable

User · Answer

The simple solution is to comment it out    a  test   if  test    a         echo  yes     no longer needed - 7 7 2014 - updateded bla bla to do foo     The added benefit is your not changing your original code and you can date it  initial it and put a reason why   Why the down vote  according to the OP request I think this is a perfectly valid solution    I want to  break the if statement above and  stop executing echo  yes   or such codes which are no longer necessary to be executed  there may be or may not be an additional condition  is there way to do this    In fact someone could look at some of the other solutions  a year latter and wonder what is going on there   As per my suggestion  one could leave good documentation for future reference  which is always good practice

User · Answer

Because you can break out of a do while loop  let us  do  one round  With a while false  at the end  the condition is never true and will not repeat  again   do        subjectText   trim filter input INPUT POST   subject         if   subjectText                 smallInfo    Please give a subject            break              messageText   trim filter input INPUT POST   message         if   messageText                 smallInfo    Please supply a message            break          while false

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I m late to the party but I wanted to contribute  I m surprised that nobody suggested exit    It s good for testing  I use it all the time and works like charm     a       b      if  a     b   echo  Clark Kent is Superman   exit    echo  Clark Kent was never Superman       The code will stop at exit   and everything after will not run    Result  Clark Kent is Superman   It works with foreach   and while   as well  It works anywhere you place it really   foreach  arr as  val      exit      echo  test      echo  finish     Result  nothing gets printed here    Use it with a forloop    for   x   2   x  lt  12   x          echo  Gru has  x minions  lt br gt        if  x    4       exit              Result  Gru has 2 minions Gru has 3 minions Gru has 4 minions   In a normal case scenario   a   Make hot chocolate great again    echo  a  exit     b    I eat chocolate and make Charlie at the Factory pay for it      Result  Make hot chocolate great again

User · Answer

a  test   if  test    a    echo  yes                         else      echo  finish

User · Answer

Answering to your question whether that is achievable or not  then yes that is achievable using  goto  operator of php    But ethically  its not a good practice to use  goto  and of there is any need to use goto then this means that code need to be reconstructed such that requirement of goto can be removed    According to the sample code you posted above  it can be clearly seen that the code can be reconstructed and the code that is no more required can be either deleted or commented  if possibility is there for use in future

User · Answer

No  there is no way to  break  an if block like you would inside loops    So turn your test into a switch    I wonder why nobody encouraged you to use switch statement since  even if you haven t to many test cases  Do you think it s too verbose   I would definitely go for it here    switch  a       case  test             do stuff here             if    Reason why you may break                 break    this will prevent executing  echo  yes    statement                   echo  yes                             break    As one may already know  we might always have to break at the end of case to prevent executing following cases instructions        default            something else here               break        To me Exceptions are meant to raise errors and not really to control execution flaw  If the break behaviour you are trying to set is not about unexpected error s   Exception handling is not the right solution here

User · Answer

No   But how about    a  test   if  test    a      if   someOtherCondition          echo  yes         echo  finish

User · Answer

arr array  test   go for it     a  test   foreach  arr as  val      output    test     if  val      a   output         echo  output    echo  finish     combining your statements  i think this would give you your wished result  clean and simple  without having too much statements   for the ugly and good looking code  my recomandation would be   function myfunction      if   process x       process y       process z          clean all processes          return         do all the stuff you need to do       somewhere in your normal code  myfunction

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goto      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

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There exist command  goto  if smth                                                    goto Area1                           Area1      your code here       However  remember goto is not a recommended practice  because it makes the code to be formatted unusually

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To completely stop the rest of the script from running you can just do  exit    In place of break  The rest of the code will not execute

[php] Any way to break if statement in PHP?

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