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Bug #14421 Numeric string comparsion fails
Submitted: 2001-12-11 05:21 UTC Modified: 2001-12-11 12:49 UTC
From: pauli dot ojanen at cencei dot fi Assigned:
Status: Not a bug Package: Strings related
PHP Version: 4.0.6 OS: Suse Linux, Apache web server
Private report: No CVE-ID: None
 [2001-12-11 05:21 UTC] pauli dot ojanen at cencei dot fi
<?php
 
// Values are NOT the same and it should print out
// "It worked" but it prints "PHP bugs."
 
if("2000000011211132516" == "2000000011211132521") {
  print("PHP bugs.");
} 
else { 
  print("It worked.");
} 
  
?>

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 [2001-12-11 12:49 UTC] sander@php.net
"2000000011211132516" is converted to a number, and so is "2000000011211132521". PHP can't handle numbers that large and therefor may work incorrect.
Use === to avoid that conversion.
 
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