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(PHP ActiveX) Manually Follow HTTP RedirectsDemonstrates how to manually follow redirects for an HTTP GET.
<?php // This example requires the Chilkat API to have been previously unlocked. // See Global Unlock Sample for sample code. // For versions of Chilkat < 10.0.0, use new COM('Chilkat_9_5_0.Chilkat.Http') $http = new COM("Chilkat.Http"); // The FollowRedirects property controls whether redirects // are automatically followed. The default behavior is to // automatically follow redirects. // Explicitly set FollowRedirects so that redirects are NOT automatically taken: $http->FollowRedirects = 0; // resp is a Chilkat.HttpResponse $resp = $http->QuickGetObj('http://yandex.ru/'); if ($http->LastMethodSuccess == 0) { print $http->LastErrorText . "\n"; exit; } $status = $resp->StatusCode; print 'HTTP Response Status: ' . $status . "\n"; // The FinalRedirectUrl property will contain the redirect URL // If FollowRedirects was equal to 1, then all of the // intermediate redirects (if any) would be followed until // there were no more redirects. However, because // FollowRedirects is not 1, FinalRedirectUrl contains // the next redirect URL. $loopCount = 0; while (($status == 302)) { // IMPORTANT: This example requires Chilkat v9.5.0.49 or greater because // the FinalRedirectUrl in prior versions is only set when redirects // are automatically followed. Starting in v9.5.0.49, the FinalRedirectUrl is // set to the next redirect URL when a 301/302 response is received, regardless // of the value of the FollowRedirects property. print 'Redirect URL: ' . $http->FinalRedirectUrl . "\n"; $nextUrl = $http->FinalRedirectUrl; // resp is a Chilkat.HttpResponse $resp = $http->QuickGetObj($nextUrl); if ($http->LastMethodSuccess == 0) { print $http->LastErrorText . "\n"; exit; } $status = $resp->StatusCode; print 'HTTP Response Status: ' . $status . "\n"; // For safety, prevent infinite loops by // keeping a loopCount and only allows following a max // of 10 redirects: $loopCount = $loopCount + 1; if ($loopCount > 10) { print 'Too many redirects.' . "\n"; exit; } } ?> |
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