From: reptilien dot 19831209be1 at gmail dot com
Operating system:
PHP version: Irrelevant
Package: Output Control
Bug Type: Feature/Change Request
Bug description:Alternative syntax to access, replace, count a portion of a
string or an array
Description:
------------
This is a simply and intuitive proposition to access or replace a part of a
string or an array. This syntax from partly shell script syntax. We can
extend
this proposition for a simply way to count the number of characteres of a
string
or elements of an array.
Test script:
---------------
$str = "abcdefghi";
$arr = array("j", "k", "l", "m", "n");
$arr1= array("j", "k", array("l", "m"), "n", "o");
Expected result:
----------------
---
Propositions :
---
1. Alternative to substr
$str[0:5] // return 'abcde'
$str[:5] // return 'abcde' (the same as above)
$str[0:-1] // the same as $str
$str[1:2] // return 'bc'
$str[-2] // return 'hi'
$str[-3:1] // return 'g'
2. Alternative to substr_replace
$str[0:5]="jklmn"; // $str is now 'jklmnfghi'
$str[:5]="jklmn"; // $str is now 'jklmnfghi' (the same as above)
$str[-5]="j"; // $str is now 'abcdjfghi'
$str[-5]="jklmn"; // $str is now 'abcdjklmn'
$str[-5]="jklmnopqr"; // $str is now 'abcdjklmn', the rest is ignored
3. Alternative to array_slice()
$arr[0:4] // return 'j', 'k', 'l', 'm'
$arr[:4] // return 'j', 'k', 'l', 'm' (the same as above)
$arr[0:-1] // the same as $arr
$arr[-2] // return 'm', 'n' (if key -2 doesn't exist)
$arr[-2:2] // force to return 'm', 'n' (without ambiguation)
$arr[-3:1] // return 'l'
$arr1[2:2] // return ('l', 'm'), 'n'
$arr1[2:2][0] // return ('l', 'm')
$arr1[2:2][1] // return 'n'
4. Alternative to array_replace()
$arr[0:4]=array('a', 'b', 'c', 'd'); // $arr is now 'a', 'b', 'c', 'd',
'n'
$arr[-2]=array('a', 'b'); // $arr is now 'j', 'k', 'l', 'a', 'b' (if key
-2
doesn't exist)
$arr[-2:2]=array('a', 'b'); // $arr is now 'j', 'k', 'l', 'a', 'b' (forced
method, without ambiguation)
$arr1[-3:2]=array(array('x', 'y'), 'z'); // $arr1 is now 'j', 'k', ('x',
'y'),
'z', 'o'
$arr1[-3:2]=array(array('x', 'y'), 'z', 'a'); // $arr1 is now 'j', 'k',
('x',
'y'), 'z', 'o' (the rest is ignored)
5. Alternative to strlen() and count()
note: in shell script, # is used to count the number of chararacters in a
string; in php # is used for comments (we need an other symbol)
$str[#] // musn't be used
$str[?] // return 9
$arr[?] // return 5
$arr[1:-1:?] // return 4 (equivalent at count($arr)-1)
Actual result:
--------------
---
Actual results :
---
$str[0]; // return a
$arr[0]; // return j
$arr1[2]; // return ('l', 'm')
$str[0]="x"; // $str is now xbcdefghi
$str[3]="xyz"; // $str is now 'abcxefghi' // the rest 'yz' is ignored
$arr[-1]="x"; // $arr is now 'j', 'k', 'l', 'm', 'n', -1=>'x'
---
Actual errors/warnings :
---
$str[-1] // PHP Warning: Illegal string offset: -1 (should return 'i')
$arr[-1] // PHP Notice: Undefined offset: -1 (should return 'n' if key -1
doesn't exist)
$arr[-1:1] // PHP Parse error: syntax error, unexpected ':', expecting ']'
(should return 'n', none ambiguation)
--
Edit bug report at https://bugs.php.net/bug.php?id=64054&edit=1
--
Try a snapshot (PHP 5.4):
https://bugs.php.net/fix.php?id=64054&r=trysnapshot54
Try a snapshot (PHP 5.3):
https://bugs.php.net/fix.php?id=64054&r=trysnapshot53
Try a snapshot (trunk):
https://bugs.php.net/fix.php?id=64054&r=trysnapshottrunk
Fixed in SVN: https://bugs.php.net/fix.php?id=64054&r=fixed
Fixed in release: https://bugs.php.net/fix.php?id=64054&r=alreadyfixed
Need backtrace: https://bugs.php.net/fix.php?id=64054&r=needtrace
Need Reproduce Script: https://bugs.php.net/fix.php?id=64054&r=needscript
Try newer version: https://bugs.php.net/fix.php?id=64054&r=oldversion
Not developer issue: https://bugs.php.net/fix.php?id=64054&r=support
Expected behavior: https://bugs.php.net/fix.php?id=64054&r=notwrong
Not enough info:
https://bugs.php.net/fix.php?id=64054&r=notenoughinfo
Submitted twice:
https://bugs.php.net/fix.php?id=64054&r=submittedtwice
register_globals: https://bugs.php.net/fix.php?id=64054&r=globals
PHP 4 support discontinued: https://bugs.php.net/fix.php?id=64054&r=php4
Daylight Savings: https://bugs.php.net/fix.php?id=64054&r=dst
IIS Stability: https://bugs.php.net/fix.php?id=64054&r=isapi
Install GNU Sed: https://bugs.php.net/fix.php?id=64054&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=64054&r=float
No Zend Extensions: https://bugs.php.net/fix.php?id=64054&r=nozend
MySQL Configuration Error: https://bugs.php.net/fix.php?id=64054&r=mysqlcfg
