how can I prepend a string?

[james438]

how do you prepend a value to a string.
For example

$a='great';
prepend 'pop ' to $a;
$a == 'pop great';

sort of like the reverse of .=

[Nile]

So I don't get what you mean.
When you use .= have the text go in the beginning not front?

[james438]

yes.


$a='what';
$a.=' if?';
//$a becomes 'what if?';

What I want to do is the opposite. I want to know if there is some sort of function or way that I can prepend the string so that you can add 'so ' to $a to make $a become 'so what if?'.

[Nile]

Well, why dont you just:
$a='what';
$a.=$a.' if?';
//$a becomes 'what if?';

[james438]

because $a already has a pregenerated value. Nice thought though. I just found this simple answer though ;)
$a='if?';
$b='what ';
$a="$b$a";

//$a becomes "what if?"

[Nile]

Isn't that just like what I posted?
EDIT: Try what I posted.

[james438]

No. You appended the string. I prepended the string. Since it is short here is the code that I am using it in:

<?php
$a=0;$b='0000000';
foreach ($_POST as $field[] => $value[])
{
if (strpos($field[$a],'check')===0)
else $value[$a]="$b$value[$a]";
echo "$field[$a] = $value[$a]<br>";$a++;
}

echo "pp $_POST[loot_Lasl] pp";
?> to do what you suggested would erase the passed value, which is why I needed to prepend the string.

P.S. the script is only in its infancy, so no need to critique it. I am merely designing it right now.

[Nile]

o then you would judt:


$a='what';
$a=$a.' if?';
//$a becomes 'what if?';

[Twey]

$a = ' if?';
$a = 'What' . $a;$a .= $b is just a short form of $a = $a . $b.

[james438]

that works too :)

[Twey]

Also is more efficient.

[djr33]

Though you now have your answer, you've entirely overthought this:
$a = 'abc'; $b = 'xyz';
$a.$b becomes 'abcxyz'

To insert a space, that is another step, using $a.' '.$b

And of course you'll have to pick what value is $a, and what is $b.

In short, using the . operator will add two strings.

And as Twey has pointed out, the .= is just a shortcut to $a = $a.$b;. There is no shortcut for using =., and equivalent of $a = $b.$a;