php - Extract first number(s) from variable -

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i have variables start number or numbers , need script determine number ends, example variable can following:

1234-hello1.jpg

1 hello1.gif

1234hello1.gif

123456 hello1.gif

what trying explode function not work, , regex poor, need left first number , ignore other number in string. need left number(s) in bold.

thanks in advance...

$arr = str_split($str); for($i = 0; $i < count($arr); ++$i){    if(!is_numeric($arr[$i])){        echo "number ends @ index: " . $i;        break;    } }

you put numbers array using $arr[$i] if wish. lot more readable using regex.

you add logic allow 1 decimal point question seems want integers.

http://sandbox.onlinephpfunctions.com/code/fd21437e8c1502b56572a624cf6e4683cf483a8d - example of working code


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