PHP is_URL函数代码示例

             break;
         case "IP":
             if (!is_ipaddr($altname['value'])) {
                 $input_errors[] = gettext("IP subjectAltName values must be valid IP Addresses");
             }
             break;
         case "email":
             if (empty($altname['value'])) {
                 $input_errors[] = gettext("You must provide an e-mail address for this type of subjectAltName");
             }
             if (preg_match("/[\\!\\#\$\\%\\^\\(\\)\\~\\?\\>\\<\\&\\/\\\\,\"\\']/", $altname['value'])) {
                 $input_errors[] = gettext("The e-mail provided in a subjectAltName contains invalid characters.");
             }
             break;
         case "URI":
             if (!is_URL($altname['value'])) {
                 $input_errors[] = gettext("URI subjectAltName types must be a valid URI");
             }
             break;
         default:
             $input_errors[] = gettext("Unrecognized subjectAltName type.");
     }
 }
 /* Make sure we do not have invalid characters in the fields for the certificate */
 for ($i = 0; $i < count($reqdfields); $i++) {
     if (preg_match('/email/', $reqdfields[$i])) {
         /* dn_email or csr_dn_name */
         if (preg_match("/[\\!\\#\$\\%\\^\\(\\)\\~\\?\\>\\<\\&\\/\\\\,\"\\']/", $pconfig[$reqdfields[$i]])) {
             $input_errors[] = gettext("The field 'Distinguished name Email Address' contains invalid characters.");
         }
     } elseif (preg_match('/commonname/', $reqdfields[$i])) {

 if ($_POST['ddnsdomainkey'] && !$_POST['ddnsdomainkeyname'] || $_POST['ddnsdomainkeyname'] && !$_POST['ddnsdomainkey']) {
     $input_errors[] = gettext("You must specify both a valid domain key and key name.");
 }
 if ($_POST['domainsearchlist']) {
     $domain_array = preg_split("/[ ;]+/", $_POST['domainsearchlist']);
     foreach ($domain_array as $curdomain) {
         if (!is_domain($curdomain)) {
             $input_errors[] = gettext("A valid domain search list must be specified.");
             break;
         }
     }
 }
 if ($_POST['ntp1'] && !is_ipaddrv4($_POST['ntp1']) || $_POST['ntp2'] && !is_ipaddrv4($_POST['ntp2'])) {
     $input_errors[] = gettext("A valid IP address must be specified for the primary/secondary NTP servers.");
 }
 if ($_POST['tftp'] && !is_ipaddrv4($_POST['tftp']) && !is_domain($_POST['tftp']) && !is_URL($_POST['tftp'])) {
     $input_errors[] = gettext("A valid IP address or hostname must be specified for the TFTP server.");
 }
 if ($_POST['nextserver'] && !is_ipaddrv4($_POST['nextserver'])) {
     $input_errors[] = gettext("A valid IP address must be specified for the network boot server.");
 }
 if (!$input_errors) {
     $mapent = array();
     $mapent['mac'] = $_POST['mac'];
     $mapent['cid'] = $_POST['cid'];
     $mapent['ipaddr'] = $_POST['ipaddr'];
     $mapent['hostname'] = $_POST['hostname'];
     $mapent['descr'] = $_POST['descr'];
     $mapent['arp_table_static_entry'] = $_POST['arp_table_static_entry'] ? true : false;
     $mapent['filename'] = $_POST['filename'];
     $mapent['rootpath'] = $_POST['rootpath'];

    $pconfig['verifysslpeer'] = isset($a_checkip[$id]['verifysslpeer']);
    $pconfig['descr'] = $a_checkip[$id]['descr'];
}
if ($_POST) {
    unset($input_errors);
    $pconfig = $_POST;
    /* input validation */
    $reqdfields = array();
    $reqdfieldsn = array();
    $reqdfields = array_merge($reqdfields, explode(" ", "name url"));
    $reqdfieldsn = array_merge($reqdfieldsn, array(gettext("Name"), gettext("URL")));
    do_input_validation($_POST, $reqdfields, $reqdfieldsn, $input_errors);
    if ($_POST['name'] && !is_validaliasname($_POST['name'])) {
        $input_errors[] = gettext("The Check IP Service name contains invalid characters.");
    }
    if ($_POST['url'] && !is_URL($_POST['url'])) {
        $input_errors[] = gettext("The Check IP Service URL is not valid.");
    }
    if ($_POST['passwordfld'] != $_POST['passwordfld_confirm']) {
        $input_errors[] = gettext("Password and confirmed password must match.");
    }
    if (!$input_errors) {
        $checkip = array();
        $checkip['enable'] = $_POST['enable'] ? true : false;
        $checkip['name'] = $_POST['name'];
        $checkip['url'] = $_POST['url'];
        $checkip['username'] = $_POST['username'];
        if ($_POST['passwordfld'] != DMYPWD) {
            $checkip['password'] = $_POST['passwordfld'];
        } else {
            $checkip['password'] = $a_checkip[$id]['password'];

     }
 }
 $alias = array();
 $address = array();
 $final_address_details = array();
 $alias['name'] = $_POST['name'];
 if (preg_match("/urltable/i", $_POST['type'])) {
     $address = "";
     /* item is a url table type */
     if ($_POST['address0']) {
         /* fetch down and add in */
         $_POST['address0'] = trim($_POST['address0']);
         $address[] = $_POST['address0'];
         $alias['url'] = $_POST['address0'];
         $alias['updatefreq'] = $_POST['address_subnet0'] ? $_POST['address_subnet0'] : 7;
         if (!is_URL($alias['url']) || empty($alias['url'])) {
             $input_errors[] = gettext("You must provide a valid URL.");
         } elseif (!process_alias_urltable($alias['name'], $alias['url'], 0, true)) {
             $input_errors[] = gettext("Unable to fetch usable data.");
         }
         if ($_POST["detail0"] != "") {
             if (strpos($_POST["detail0"], "||") === false && substr($_POST["detail0"], 0, 1) != "|" && substr($_POST["detail0"], -1, 1) != "|") {
                 $final_address_details[] = $_POST["detail0"];
             } else {
                 /* Remove leading and trailing vertical bars and replace multiple vertical bars with single, */
                 /* and put in the output array so the text is at least redisplayed for the user. */
                 $final_address_details[] = preg_replace('/\\|\\|+/', '|', trim($_POST["detail0"], "|"));
                 $input_errors[] = $vertical_bar_err_text;
             }
         } else {
             $final_address_details[] = sprintf(gettext("Entry added %s"), date('r'));

 $pconfig = $_POST;
 /* input validation */
 if (empty($_POST['location'])) {
     $reqdfields = explode(" ", "patch");
     $reqdfieldsn = array(gettext("Patch Contents"));
 } else {
     $reqdfields = explode(" ", "descr location");
     $reqdfieldsn = array(gettext("Description"), gettext("URL/Commit ID"));
 }
 $pf_version = substr(trim(file_get_contents("/etc/version")), 0, 3);
 if ($pf_version < 2.1) {
     $input_errors = eval('do_input_validation($_POST, $reqdfields, $reqdfieldsn, &$input_errors); return $input_errors;');
 } else {
     do_input_validation($_POST, $reqdfields, $reqdfieldsn, $input_errors);
 }
 if (!empty($_POST['location']) && !is_commit_id($_POST['location']) && !is_URL($_POST['location'])) {
     $input_errors[] = gettext("The supplied commit ID/URL appears to be invalid.");
 }
 if (!is_numeric($_POST['pathstrip'])) {
     $input_errors[] = gettext("Path Strip Count must be numeric!");
 }
 if (!empty($_POST['basedir']) && (!file_exists($_POST['basedir']) || !is_dir($_POST['basedir']))) {
     $input_errors[] = gettext("Base Directory must exist and be a directory!");
 }
 if (!$input_errors) {
     $thispatch = array();
     $thispatch['descr'] = $_POST['descr'];
     $thispatch['location'] = patch_fixup_url($_POST['location']);
     if (!empty($_POST['patch'])) {
         /* Strip DOS style carriage returns from textarea input */
         $thispatch['patch'] = base64_encode(str_replace("\r", "", $_POST['patch']));

         if (!is_domain($curdomain)) {
             $input_errors[] = gettext("A valid domain search list must be specified.");
             break;
         }
     }
 }
 if ($_POST['ntp1'] && !is_ipaddrv6($_POST['ntp1']) || $_POST['ntp2'] && !is_ipaddrv6($_POST['ntp2'])) {
     $input_errors[] = gettext("A valid IPv6 address must be specified for the primary/secondary NTP servers.");
 }
 if ($_POST['domain'] && !is_domain($_POST['domain'])) {
     $input_errors[] = gettext("A valid domain name must be specified for the DNS domain.");
 }
 if ($_POST['tftp'] && !is_ipaddr($_POST['tftp']) && !is_domain($_POST['tftp']) && !is_URL($_POST['tftp'])) {
     $input_errors[] = gettext("A valid IPv6 address or hostname must be specified for the TFTP server.");
 }
 if ($_POST['bootfile_url'] && !is_URL($_POST['bootfile_url'])) {
     $input_errors[] = gettext("A valid URL must be specified for the network bootfile.");
 }
 // Disallow a range that includes the virtualip
 if (is_array($config['virtualip']['vip'])) {
     foreach ($config['virtualip']['vip'] as $vip) {
         if ($vip['interface'] == $if) {
             if ($vip['subnetv6'] && is_inrange_v6($vip['subnetv6'], $_POST['range_from'], $_POST['range_to'])) {
                 $input_errors[] = sprintf(gettext("The subnet range cannot overlap with virtual IPv6 address %s."), $vip['subnetv6']);
             }
         }
     }
 }
 $noip = false;
 if (is_array($a_maps)) {
     foreach ($a_maps as $map) {

 }
 /* check for name conflicts */
 if (empty($a_aliases[$id])) {
     foreach ($a_aliases as $alias) {
         if ($alias['name'] == $_POST['name']) {
             $input_errors[] = gettext("An alias with this name already exists.");
             break;
         }
     }
 }
 /* user may not change type */
 if (isset($id) && $pconfig['type'] != $a_aliases[$id]['type']) {
     $input_errors[] = gettext("Alias type may not be changed for an existing alias.");
 }
 if ($pconfig['type'] == 'urltable') {
     if (empty($pconfig['url']) || !is_URL($pconfig['url'])) {
         $input_errors[] = gettext("You must provide a valid URL.");
     }
 }
 if (count($input_errors) == 0) {
     // save to config
     $copy_fields = array("name", "detail", "address", "type", "descr", "updatefreq", "aliasurl", "url");
     $confItem = array();
     foreach ($copy_fields as $fieldname) {
         if (!empty($pconfig[$fieldname])) {
             $confItem[$fieldname] = $pconfig[$fieldname];
         }
     }
     /*   Check to see if alias name needs to be
      *   renamed on referenced rules and such
      */