<![CDATA[---------------------------------------------------
| Date: 2003-02-17 00:24:06 |
| Filename: ereg.php |
| Author: detour@metalshell.com |
| |
| http://www.metalshell.com/ |
---------------------------------------------------
<?php
// ereg.php by detour@metalshell.com
//
// Example on using ereg, eregi, ereg_replace, and
// eregi_replace().
//
// http://www.metalshell.com/
//
$str1 = "cat dog mouse";
$ipnum = array("127.0.0.1",
"255.255.255.255",
"204.28.82.290",
"209.192.28.28.34");
// ereg() is case sensitive so CAT will not be found
if( ereg("CAT", $str1) )
echo('CAT found.<br>');
else
echo('CAT not found.<br>');
// eregi() is case insensitive so dog is found
if( eregi("dog", $str1) )
echo('dog found.<br>');
else
echo('dog not found.<br>');
// Replace 'mouse' with 'cat'
if( $str1 = ereg_replace("mouse", "CAT", $str1) )
echo('mouse replaced with cat<br>');
else
echo('mouse not found.<br>');
echo('$str1 now equals "' . $str1 . '"<br>');
// Case insensitive replace
if( $str1 = eregi_replace("cat", "mouse", $str1) )
echo('cat and CAT replace with mouse<br>');
else
echo('no match for cat<br>');
echo('$str1 now equals "' . $str1 . '"<br>');
// Cycle through the ip array and test each one
foreach ($ipnum as $ipn) {
if(valid_ip($ipn))
echo("$ipn is a valid ip.<br>");
else
echo("$ipn is an invalid ip.<br>");
}
// Takes an ip as an arg and tests to see if it is valid
function valid_ip($ip) {
if( ereg( "^([0-9]{1,3}).([0-9]{1,3}).([0-9]{1,3}).([0-9]{1,3})$", $ip, $res ) ) {
for($x = 1; $x < 5; $x++)
if($res[$x] > 255)
return FALSE;
} else {
return FALSE;
}
return TRUE;
}
?>
]]></plaintext></body>