Notice: Uninitialized string offset: 2 notice

Question

The below code is from a php book, when i run i am getting the message, Notice: Uninitialized string offset: 2

 // This function will put all of the matches found into
 // the $matches array
    preg_match("/\d/", "1 and 2 and 3 and 4", $matches);
 // The 0 element of the $matches array holds another
 // array of the matches.
    echo "Value: " . $matches[0][2] . "\n";

should i have to use print_r instead of echo?

Look up what [`preg_match`](http://php.net/preg_match) does. — BananaMan, May 16 '14 at 23:49

score 2 · Answer 1 · answered May 16 '14 at 23:47

2

preg_match doesn't set $matches to a multi-dimensional array. It's an array where [0] is the matched element, and the remaining elements are the matches for all the capture groups.

You should be using preg_match_all.

answered May 16 '14 at 23:47

Barmar

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+1 Simply replacing `preg_match` with `preg_match_all` gives the expected output: `3`. – Cypher May 16 '14 at 23:48

Notice: Uninitialized string offset: 2 notice

1 Answers1