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  Searching for substring with strpos vs perl-style regex
strpos x 1.45 faster 0.0560 preg_match 0.0812
  Searching for substring with perl-style regex vs ereg
preg_match x 1.80 faster 0.0828 ereg 0.1487

Testing PHP 4.0.6 Completed on Linux. Benchmark done on: 01-Mar-2004 09:07:59

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