Edit report at https://bugs.php.net/bug.php?id=63632&edit=1
ID: 63632
Comment by: inefedor at gmail dot com
Reported by: bensor987 at neuf dot fr
Summary: $var =. 'val';
Status: Open
Type: Feature/Change Request
Package: Variables related
Operating System: All
PHP Version: Irrelevant
Block user comment: N
Private report: N
New Comment:
I think the main concern with "preconcatenation" is 100% chance of reallocation
of memory. If it will be part of syntax - people would use it often, but it's
something you should avoid using of.
Try to execute this code:
$c = 10000;
$b = 200;
$t1 = microtime(1);
$str1 = "";
for ($i = 0; $i < $c; ++$i) {
$str1 = str_repeat(mt_rand(0, 9), $b) . "\n" . $str1;
}
$t1 = microtime(1) - $t1;
$t2 = microtime(1);
$strArr = array();
for ($i = 0; $i < $c; ++$i) {
$strArr[] = str_repeat(mt_rand(0, 9), $b);
}
$strArr = implode("\n", array_reverse($strArr));
$t2 = microtime(1) - $t2;
echo $t1 . "\n" . $t2 . "\n";
First part of this code does exactly the same as second part, but it's 300
times slower.
Previous Comments:
------------------------------------------------------------------------
[2012-11-28 11:07:15] bensor987 at neuf dot fr
Erm. Maybe we could use another syntax for this suggestion ?
------------------------------------------------------------------------
[2012-11-28 10:57:51] inefedor at gmail dot com
Collides with:
$asd =.4;
echo $asd;
Output should be: 0.4
------------------------------------------------------------------------
[2012-11-28 09:57:01] bensor987 at neuf dot fr
Description:
------------
Why not add "$var =. 'val';" syntax ?
It would concatenate 'val' before $var.
Actually, you have to do this
<?php
$var = 'val' . $var;
?>
My suggestion make the code shorter :
<?php
$var =. 'val';
?>
Test script:
---------------
<?php
$a = "Hello ";
$b = $a . "World!"; // now $b contains "Hello World!"
$c = "World! " . $a; // now $c contains "World! Hello "
$a = $b = "Hello ";
$a .= "World!"; // now $a contains "Hello World!"
$b =. "World! "; // now $b contains "World! Hello "
?>
------------------------------------------------------------------------
--
Edit this bug report at https://bugs.php.net/bug.php?id=63632&edit=1
