[Resolved] selective text, replace whole string

[kender]

is there a way to write a regular expression to replace a whole string of text, if it contains one specific word

ie: "Hello to you, would you like to buy some candy"

search for buy, if found replace whole sentence with "zig-zag paddy"

result: "zig-zag paddy"
NOT: "Hello to you, would you like to zig-zag paddy some candy"

[planetsim]

Not tested but

$string = "Hello to you, would you like to buy some candy";

$string = preg_replace("/buy/is","zig-zag paddy",$string);

echo $string;

[kender]

I'll try when i get home!
thanks

[kender]

didnt work, got the whole string and only replaced what was between the //'s

[xblue]

Hi Kender,

I didn't got what you are after when I first looked at your post (overlooked the big NOT somehow :S), however if you want to do it with regex, you'd need to include the rest of the string in the pattern, like

$string = preg_replace("/.*buy.*/is","zig-zag paddy",$string); 

Nevertheless I wonder if it wouldn't be easier to use stristr() for testing and (unless false) simply overwrite the complete string?

[kender]

Nevertheless I wonder if it wouldn't be easier to use stristr() for testing and (unless false) simply overwrite the complete string?

how would that work?

[kender]

i did it i think the long way.. if anyone wants to clean this up some, feel free

it works, with no errors logged, and that is all that really matters.. to me

$wrong = "In the wrong place, at the wrong time.";
$string = str_replace("errors/400.php",$wrong,$string); 
$string = str_replace("errors/403.php",$wrong,$string); 
$string = str_replace("errors/404.php",$wrong,$string); 
$string = str_replace("errors/500.php",$wrong,$string); 
$string = str_replace("errors/502.php",$wrong,$string); 
$string = str_replace("errors/503.php",$wrong,$string); 

[kangaroo232002]

Originally posted by xblue
Nevertheless I wonder if it wouldn't be easier to use stristr() for testing and (unless false) simply overwrite the complete string? [/B]

$string = "Hello to you, would you like to buy some candy";

$search = "buy";

if(!stristr($string,$search)) {
    echo "Not found";
}
else {
    echo "Found";
    $new_string = "Zig Zag Paddy";
}

I think that was what xblue was talking about? Not tested, but i guess it would work...