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  Searching for substring with strpos vs perl-style regex
strpos x 2.29 faster 0.0017 preg_match 0.0039
  Searching for substring with perl-style regex vs ereg
preg_match x 2.29 faster 0.0024 ereg 0.0055

Testing PHP 4.3.3 Completed on WINNT. Benchmark done on: 29-Feb-2004 15:21:27

(c) 2003-2004 John Lim PHP Benchmark Suite (PHP BS 1.0).