使用mb_split（）和implode（）解析字符串时，如何将多个行跳转标识为新段落？

Question

Here is my code:

$ParagArray=array('

','

','','

');
foreach ($ParagArray as $value){
    $chunks=(mb_split($value,$text));
    $text=implode ("(PARAG)",$chunks);
}
echo "Here is the modified 1 text:<br/>";
echo $text;
echo "<br/>";

$LineArray=array('
','
','','
');
foreach ($LineArray as $value){
    $chunks=(mb_split($value,$text));
    $text=implode ("(LINE)",$chunks);
}
echo "Here is the modified 2 text:<br/>";
echo $text;
echo "<br/>";

What I try to do here is identify paragraphs as being 2-line jumps, and carriage returns as being 1-line jumps. I replace them respectively with (PARAG) and (LINE) tags.

My problem is that I end up with (PARAG)(LINE) when the text incorporates 3 line jumps, (PARAG)(PARAG) when the text incorporates 4-line jumps, etc.

Is there a way for me to modify my code to catch all the cases when there are 2 or more line jumps and replacing all the line jumps with a single (PARAG)?

Answer 1

You could use:

$str = preg_replace('/(

|

||

)[
]*|(
|
||
)/e', '"$1"? "(PARAG)": "(LINE)"', $str);