Detect integer value inside a string, alter it and leave it in the same place within the string-CodePudding

Lets say we have a string that looks something like this:

10.000 some text 5.200 some text 5.290 some text

What i want to do is to remove the last zero (if it is present) from all of the present int values within the given string, the result should be:

10.00 some text 5.20 some text 5.29 some text

Is there a convenient way to do it? Strings are mostly more complicated then the example given, so I'm looking for a way to detect an integer value, check if it ends with a 0, trim that zero and leave the altered integer value at the same place inside the string.

CodePudding user response：

$text = '10.000 some text 5.200 some text 5.290 some text';

$result = preg_replace('(0(?=[^0-9.]))', '', $text);

echo $result;   // Output: 10.00 some text 5.20 some text 5.29 some text

Regex pattern details:

(             Start capturing group
  0           Capturing group must start with a 0
  (?=         Start positive lookahead (meaning peek to the next character in the text)
    [^0-9.]   Make sure that the next character is not a digit or a dot
  )           End positive lookahead
)             End capturing group

CodePudding user response：

The fastest way:

$str = '10.000 some text 5.200 some text 5.290 some text';
echo str_replace('0 ',' ', $str);