如何搜索文本并替换为preg_replace？

Question

I want to check if the text exists: 250000 Using preg_replace or preg_match, then replace it to appear like this:

260000

Basically this is supposed to be an hour and a day (25 00:00:00) I want to check if it is midnight then the text will be replaced with the next day's date.

What I tried:

$text = "today250000";
//I need to add the line with the text that I want ($newday0000), but I do not know how
$newday = date("d", strtotime('tomorrow'));

preg_replace($text, $replace, $day);
echo $day;

I tried also:

if(strpos($text, '250000'..

But it was not stable and it changed most of the hours in my txt file

Answer 1

<?php echo preg_replace($text, $replace, $day); ?>

如果您仅“ echo $ day”，则什么也没有替换，只是回声天数没有preg_replace