<?=$var['info']?> vs <? echo {$var['info']}; ?>

Discussion in 'PHP' started by x0x, Jul 14, 2009.

0
  1. #1
    <?=$var['info']?> VS <? echo {$var['info']}; ?>

    Which should I use? The first one is much sorter and works perfectly. Although if it works faster with echoing it, then I'll use that... What do you think?

    Also in a strings and queries, which is better to use:

    ".$var['info']."

    or

    {$var['info']}

    or

    $var[info]
     
    x0x, Jul 14, 2009 IP
  2. Mano2

    Mano2 Greenhorn

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    #2
    simply:

    <?php
    echo $var['info'];
    ?>
     
    Mano2, Jul 14, 2009 IP
  3. garrettheel

    garrettheel Peon

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    #3
    watch out when using short tags "<?", as there's a chance your code might have to run on a server that doesn't have them enabled in the future.

    as far as ".$var." or {$var} goes, it wont make much difference. Just choose one you like and be consistent in using it.
     
    garrettheel, Jul 14, 2009 IP
  4. dannywwww

    dannywwww Well-Known Member

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    #4
    There is no difference..the only difference would be if your servers' php ini file didn't have short tags set as on, though most usually do, i don't think windows servers have them on as default though.
     
    dannywwww, Jul 14, 2009 IP
  5. anthonywebs

    anthonywebs Banned

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    #5
    if <?=$var['info']?>
    is enabled, its easier to write
     
    anthonywebs, Jul 14, 2009 IP
  6. garrettheel

    garrettheel Peon

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    #6
    What's more important? Easier to write, or compatibility
     
    garrettheel, Jul 14, 2009 IP
  7. SEOpaw

    SEOpaw Peon

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    #7
    you can either both of those codes but if you using php templating i prefer <?=$var['info']?> not to much code in it
     
    SEOpaw, Jul 14, 2009 IP
  8. ads2help

    ads2help Peon

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    #8
    Personally I prefer complete opening tags rather than short tags because some servers don't have it enabled.

    <?php
    echo $var['info'];
    ?>

    For string, personally I don't think they matter. I prefer concatenation using dot : ".$var['info']."
     
    ads2help, Jul 15, 2009 IP
  9. x0x

    x0x Well-Known Member

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    #9
    Ok. Thanks.

    Another one. Is there a difference between 
     if(isset($rnd){}
    PHP:
    and 
    if($rnd){}
    PHP:
    I just get those "Notice: Undefined index: $rnd" errors and when I use "isset" they seem to go away. Should I just ignore those errors? I turned all errors on and I'm trying to solve every one of them...
     
    x0x, Jul 15, 2009 IP
  10. goscript

    goscript Prominent Member

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    #10
    Yes there is.

    isset checks to see if that variable contains a value.
    If you don't use isset most likely will throw an error if the variable is not initialized yet.
     
    goscript, Jul 15, 2009 IP
  11. wd_2k6

    wd_2k6 Peon

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    #11
    So if we are checking if a post has been submitted or if a session variable exists there is no real reason to use isset ?
    
if($_POST['submit']){ //Then the post has been submitted }

if($_SESSION['auth']){ //Then the user has been logged in }
    PHP:
    Cause surley theres no way for these variables to have been created without a proper login or form submission, so there's no need for an isset check?

    Infact couldn't we shorten that down further and simply just say
    
if($_POST){ //Then the post has been submitted }
    PHP:
    cause the post array woudln't have anything in if it hasnt been submitted
     
    wd_2k6, Jul 15, 2009 IP