如何在php中提取字符串末尾的值

Question

In my php code I have an array of variables starting with a word followed by an (random) number:

x[0] = 'justaword8'
x[1] = 'justaword5'
x[2] = 'justaword4'
etc.

I know i must use a foreach loop, but how to extract the figures at the end of each word? (I assume I could use preg_match() but have no idea how specify that function exactly?)

Answer 1

Since the number varies in length, between one or two digits, you can use preg_match() like this:

foreach( $array as $x) {
    preg_match( '/(\d{1,2})$/', $x, $match);
    echo "The number is: " . $match[1];
}

However, since the prefix is known ahead of time, just remove it directly (as per Marc B's comment, with an example usage):

$prefix = "justaword";
$length = strlen( $prefix);

foreach( $array as $x) {
    echo "The number is: " . substr( $x, $length);
}