Words in a string

[gerkintrigg]

Hello.

 

I'm trying to work out how to get certain words from a text string into an array.

 

Essentially, I want to take all words beginning with a $ symbol from an HTML file and bung them into an array for processing. This way, I can have people upload HTML files and my PHP project can replace them with other stuff (like names, input boxes etc).

 

I know the explode command and could loop through to split at the $ symbol, then loop through to break at the following space character, but it seems a long-winded way of doing it.

 

Thanks in advance.

[rajivgonsalves]

consider this

 

<?php

$strTest = '$this is $best a test';

preg_match_all("~\\\$([\w\d]+)?~",$strTest,$arrMatches);

print_r($arrMatches[0]);


?>

 

hope its helpfull...

[gerkintrigg]

I think i understand the premise, but I don't want to print the words, but put them into an array and as I'm not familiar with your way of matching the string (preg_match always seems so impenetrable), I'm not sure how to do this.

 

I tried using a foreach loop:

 

<?php

$strTest = '$this is $best a test';

preg_match_all("~\\\$([\w\d]+)?~",$strTest,$arrMatches);
print_r($arrMatches[0]);
foreach ($arrMatches[0] as $key => $value){
echo $value[$key];
}


?>

[rajivgonsalves]

well for your first answer the code should be

 

<?php

$strTest = '$this is $best a test';

preg_match_all("~\\\$([\w\d]+)?~",$strTest,$arrMatches);
print_r($arrMatches[0]);
foreach ($arrMatches[0] as $key => $value){
echo $value;
}


?>

 

 

better still consider this following code

 

 

<?php

$arrData = array("username"=>"rajivgonsalves","email"=>"rajivgonsalves@yahoo.com");
$strTest = 'Your username is $username and your email is $email';

$strTest = preg_replace("~\\\$([\w\d]+)?~e","\$arrData['$1']",$strTest);
echo $strTest;
?>

[gerkintrigg]

Hi. Thanks for that. I got this to work:

$strTest = '$this is $best a test';

preg_match_all("~\\\$([\w\d]+)?~",$strTest,$arrMatches);
$my_array =$arrMatches[0];
foreach ($my_array as $key => $value){
echo $value;
}

for some reason, using an array delimiter doesn't seem to work in a foreach loop eg: foreach ($arrMatches[0] as $key => $value){

so i needed to put the array into a different variable.

 

but thanks for the details - It's very useful.

[rajivgonsalves]

actually that should work without any problem