Replace a substring in a string and return the whole string....how do you do it?

[gregaryb]

The following code is not working as I intuitivel expect it to...

$nI = strpos($strText, "'");
$strText = substr_replace($strText, "XXXX", $nI);
echo $strText

$strText contains "Greg's Native Landscapes"
After the call to substr_replace $strText contains GregXXXX
I am expecting it to contain "GregXXXXs Native Landscapes"
So how the devil is this function working?
And how do I obtain the result I am expecting?

This function is unbelievably confusing!
If I do this instead:

$nI = strpos($strText, "'");
$strText = substr_replace($strText, "XXXX", 100);
echo $strText

I get "Greg's Native LandscapeXXXX".
WTF???
Am I really going to have to code my own string library with functions that behave in the ways I am accustomed to!
 

Edited October 31, 2023 by gregaryb

[Don E]

To achieve your initial goal, try this:

substr_replace("Greg's Native Landscapes","XXXX",4, 1);

4 represents the position as defined in your $n1 variable, and 1 represents the 'length' of characters to replace, which in this instance only 1, the apostrophe.