Find the last occurrence of a string in a string

JdS · #1 17-Feb-2007, 17:35

I am in need of a simple PHP script to find the position of the LAST occurrence of a string, within a string.

For example, if I was searching for the last me in the following string, I would expect the script to return 30:

Code:

.123456789.123456789.123456789.12
------^--------------------^--^--

The same thing happened to meemem

TurboPT · #2 17-Feb-2007, 19:13

How about the strrpos() function?

(tag won't keep the newline [before 'echo'] for some reason)

PHP Code:


$yourString = "The same thing happened to meemem";

echo strrpos($yourString, "me");

It gave me 30.

JdS · #3 18-Feb-2007, 04:06

Quote:

Note that the needle in this case can only be a single character in PHP 4

I am sorry, but I should have mentioned it already -- I am using PHP 4.

TurboPT · #4 18-Feb-2007, 08:47

Ah ha, I missed that line in the manual...

Ok then, taking an example from the last post on that page, slightly modified, how about this:

PHP Code:


$haystack = "The same thing happened to meemem";
$needle = "me";

echo strlen($haystack) - strpos(strrev($haystack), strrev($needle)) - strlen($needle);

Gives 30. (the computation of: 33 - 1 - 2)

JdS · #5 18-Feb-2007, 08:53

Good one!

Thank you.

I am doing more than one thing at this time, so excuse me for not going through the comments (on that page) sooner.

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Find the last occurrence of a string in a string

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