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Php code help.

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# 8  
Old 09-05-2014
Thanks Scrutinizer and Neo, for discussion.. I had to leave office in a hurry so I could not test much... Yes we need extended regex...

Code:
<?php

$ip=array("127.0.0.1","192.168.1.1","99.88.77.8","127.0.1.0"); 
$ban=array("127.0.1.0","99.88.76","127.0.0","127.0.1","99\.88\.7\..*","99\.88\.77\..*");
foreach($ip as $i)
{ 
   printf("ip =>%-20s in_array => %s\n",$i,var_export(in_array($i,$ban),true) ); 
}

print "\n";

foreach($ban as $b)
{
   foreach($ip as $i)
   {
 
     printf("ip => %-10s\tban =>%-5s\teregi => %-5s\n",$i,$b,var_export(eregi($b,$i),true)); 
   } 
}
?>

Code:
akshay@Aix:~$ php test.php 
ip =>127.0.0.1            in_array => false
ip =>192.168.1.1          in_array => false
ip =>99.88.77.8           in_array => false
ip =>127.0.1.0            in_array => true

ip => 127.0.0.1 	ban =>127.0.1.0	eregi => false
ip => 192.168.1.1	ban =>127.0.1.0	eregi => false
ip => 99.88.77.8	ban =>127.0.1.0	eregi => false
ip => 127.0.1.0 	ban =>127.0.1.0	eregi => 1    
ip => 127.0.0.1 	ban =>99.88.76	eregi => false
ip => 192.168.1.1	ban =>99.88.76	eregi => false
ip => 99.88.77.8	ban =>99.88.76	eregi => false
ip => 127.0.1.0 	ban =>99.88.76	eregi => false
ip => 127.0.0.1 	ban =>127.0.0	eregi => 1    
ip => 192.168.1.1	ban =>127.0.0	eregi => false
ip => 99.88.77.8	ban =>127.0.0	eregi => false
ip => 127.0.1.0 	ban =>127.0.0	eregi => false
ip => 127.0.0.1 	ban =>127.0.1	eregi => false
ip => 192.168.1.1	ban =>127.0.1	eregi => false
ip => 99.88.77.8	ban =>127.0.1	eregi => false
ip => 127.0.1.0 	ban =>127.0.1	eregi => 1    
ip => 127.0.0.1 	ban =>99\.88\.7\..*	eregi => false
ip => 192.168.1.1	ban =>99\.88\.7\..*	eregi => false
ip => 99.88.77.8	ban =>99\.88\.7\..*	eregi => false
ip => 127.0.1.0 	ban =>99\.88\.7\..*	eregi => false
ip => 127.0.0.1 	ban =>99\.88\.77\..*	eregi => false
ip => 192.168.1.1	ban =>99\.88\.77\..*	eregi => false
ip => 99.88.77.8	ban =>99\.88\.77\..*	eregi => 1    
ip => 127.0.1.0 	ban =>99\.88\.77\..*	eregi => false

---------- Post updated at 10:24 PM ---------- Previous update was at 10:20 PM ----------

unfortunately , eregi() is deprecated as of PHP 5.3, use preg_match() instead.
# 9  
Old 09-05-2014
IMO "99.88.76","127.0.0","127.0.1" are incorrect in your approach,
They should be "^99\.88\.76\.","^127\.0\.0\.","^127\.0\.1\." even if they happen to match...
# 10  
Old 09-05-2014
Yes they are incorrect (as you said dots need to be escaped), Thats what I tested in #8
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