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  Searching for substring with strpos vs perl-style regex
strpos x 2.21 faster 0.0019 preg_match 0.0042
  Searching for substring with perl-style regex vs ereg
preg_match x 1.81 faster 0.0021 ereg 0.0038

Testing PHP 5.0.0b4 Completed on WINNT. Benchmark done on: 29-Feb-2004 15:23:22

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