Php，如何在字符串中以“。”结尾的每个句子添加span标签？ [重复]

I would like to add span tag for every sentence which ended with "." like: my string:

"I could not have said, ’Betrayest thou the Son of man with a kiss?’ unless I believed in betrayal. The whole message of the crucifixion was simply that I did not."

O/P:

"<span id="s1">I could not have said, ’Betrayest thou the Son of man with a kiss?’ unless I believed in betrayal.</span> <span id="s2">The whole message of the crucifixion was simply that I did not.</span>"

how it possible with php?

</div>

You could do

<?php

$string="I could not have said, ’Betrayest thou the Son of man with a kiss?’ unless I believed in betrayal. The whole message of the crucifixion was simply that I did not.";
$output=str_replace(". ",'. </span> <span id="s2">',$string);
echo '<span id="s1">'.$output.'</span>';
?>

Edit Based on Comments

This version will make sure every new replacement gets a new span id

<?php
$string="I could not have said, ’Betrayest thou the Son of man with a kiss?’ unless I believed in betrayal. The whole message of the crucifixion was simply that I did not. Testing 123. testing again.";
$dots=substr_count($string,". ");
for($i=2;$i<=$dots+2;$i++)
{
$string=preg_replace("/\. /", ".</span> <span id =\"s$i\">" ,$string,1);
}
echo '<span id="s1">'.$string.'</span>';
?>

I'm not sure if preg_replace can do this (because of the unique IDs). Otherwise it can be manually done like this:

$newText = "";
$count = 0;
foreach (explode(".",$theText) as $part) {
  $count++;
  $newText .= "<span id=\"s$count\">$part</span>";
}

But what about periods mid sentence, as in abbreviations or something? You could probably replace the explode with a preg_split to get a better result. For instance only split if the char right after the period is not a letter or another period.

preg_split("/\.[^\,\w]/",$theText);

Or just ensure the next char is a whitespace.

preg_split("/\.\s/",$theText);

Try this code, You will get unique id for span tag.

<?php
$str = "I could not have said, 'Betrayest thou the Son of man with a kiss?' unless I believed in betrayal. The whole message of the crucifixion was simply that I did not.";
$exp_str = explode(". ",$str);
$sentence = "<span id=\"s1\">";

$n = 2;
foreach($exp_str as $val) {
    $sentence .= $val.".</span> <span id=\"s$n\">";
    $n++;
}
$n = $n-1;
$sentence = substr($sentence,0,strpos($sentence,".</span> <span id=\"s$n\">"));
echo $sentence;
?>

If you explode the sentence with ". ". I want to modify the code above.

$newText = "";
$count = 0;
foreach (explode(". ",$theText) as $part) {

   if(ctype_upper($part{0}))
   {
      $count++;
      $newText .= "<span id=\"s$count\">$part</span>";
  }

 }

I hope it should work for abbreviations or something.