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-rwxr-xr-xsystem/core/Input.php6
1 files changed, 6 insertions, 0 deletions
diff --git a/system/core/Input.php b/system/core/Input.php
index 0dc2c4550..f99adad01 100755
--- a/system/core/Input.php
+++ b/system/core/Input.php
@@ -373,6 +373,12 @@ class CI_Input {
*/
function valid_ip($ip)
{
+ // if php version >= 5.2, use filter_var to check validate ip.
+ if(is_php('5.2'))
+ {
+ return (bool) filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4);
+ }
+
$ip_segments = explode('.', $ip);
// Always 4 segments needed