Reqular exp to get the last number from a string

Question

Hello to all
how can I get a number (positive number) from a string if the string syntax is as follows:

t_def_type_id_2
t_def_type_id_22
t_def_type_id_334

so in the first line I want to get 1, and in the second I want to get 22, and in the third line I want to get 334 using preg_match_all or any other sutable php function

Answer 1

You can use regex

\d+$ 

with preg_match

Answer 2

if there is only one number in the string, just use \d+

Answer 3

Try the following:

 preg_match('/^\w+(\d+)$/U', $string, $match); $value = (int) $match[1]; 

Answer 4

you can use

 str_replace('t_def_type_id_',''); 

Answer 5

what about the following code:

^ [\ d] + (\ d +) $

Answer 6

You can use preg_replace() :

 $defTypeID = preg_replace("/^(.*?)(\d+)$/", "$2", $defTypeIDString); 

Answer 7

 $string = "t_def_type_id_2 t_def_type_id_22 t_def_type_id_334"; preg_match_all("#t_def_type_id_([0-9]+)#is", $string, $matches); $matches = $matches[1]; print_r($matches); 

Result:

 Array ( [0] => 2 [1] => 22 [2] => 334 ) 

Answer 8

If this is always the last thing on your line, then using the banal function of the string function is possible and looks a little more complicated:

 $num = ltrim(strrchr($string, "_"), "_"); 

Answer 9

you can use

 ^\w+(\d+)$ 

but I have not tested

Answer 10

Here is my alternative solution.

 $number = array_pop(explode('_', $string));