PHP - Any way to do this?

[Dynix]

Hi there,

Trying to create a script that replaces part of a given string with some character. For example:

$string = "Xtrm2Matt";

What I'd like to do is replace the 3rd, 4th and 5th characters with *, so it turns into Xt***Matt.

Ideally I'd like to create a function which returns the new string as I'll needing to use this around 3 times per script. The only snag is the string can be between 4 and 16 characters long (so perhaps an if statement to determine which characters to replace).

Any ideas on how to attempt this?

Cheers

 

[Ekim]

Do you always want to replace the 3rd, 4th and 5th character? No matter the length?

 

[Dynix]

It'd depend on the length (ideally). Perhaps something like:

if( 4 => $length < 6 ) replace 2nd/3rd/4th
if( 6 > $length < 9 ) replace 3rd/4th/5th
if( 9 > $length < 13 ) replace 5th/6th/7th
if( $length > 13 ) replace 6th/7th/8th

Cheers

 

[Dj_Jestar]

$string = '123456';
$string[3] = '*';
echo $string; // 123*56

 

[Deleted User 234324]

If its a specific sequence of characters you need to replace then you can use str_replace()

ie

$string = 123456;
$sequence = 234;
$replacewith = xyz;

$new_string = str_replace($sequence, $replacewith, $string);

 

[Dynix]

$string = '123456';
$string[3] = '*';
echo $string; // 123*56

Got it working with this with some if statements - Cheers!

 

[marc2003]

$string = 'blahblah';
$middle = floor(strlen($string) / 2);
$string[$middle-1] = $string[$middle] = $string[$middle+1] = '*';

that will whack 3 *s in the middle of any string.