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1 <?php |
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2 |
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3 /** |
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4 * @file |
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5 * Ad Channel include file. |
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6 * |
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7 * Copyright (c) 2008-2009. |
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8 * Jeremy Andrews <jeremy@tag1consulting.com>. |
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9 */ |
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10 |
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11 /** |
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12 * Filter advertisements not in an appropriate channel, from cache. |
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13 */ |
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14 function ad_channel_cache_filter($ads) { |
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15 _debug_echo("ad_channel_cache: adserve_cache_filter"); |
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16 |
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17 $channels = adserve_cache('get_cache', 'channel'); |
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18 $valid = array(); |
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19 $nochannel = array(); |
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20 foreach ($ads as $aid) { |
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21 _debug_echo("ad_channel_cache: checking aid($aid)"); |
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22 if (is_array($channels['ads']) && isset($channels['ads'][$aid]) && |
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23 is_array($channels['ads'][$aid])) { |
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24 foreach ($channels['ads'][$aid] as $chid) { |
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25 $channel = $channels['channels'][$chid]; |
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26 $display = $channel->display; |
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27 $urls = unserialize($channel->urls); |
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28 $frontpage = adserve_variable('site_frontpage') ? adserve_variable('site_frontpage') : 'node'; |
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29 $regexp = '/^('. preg_replace(array('/(\r\n?|\n)/', '/\\\\\*/', '/(^|\|)\\\\<front\\\\>($|\|)/'), array('|', '.*', '\1'. preg_quote($frontpage, '/') .'\2'), preg_quote($urls, '/')) .')$/'; |
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30 $match = preg_match($regexp, adserve_variable('url')); |
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31 _debug_echo("ad_channel_cache: checking aid($aid) against channel($chid) path(". adserve_variable('url') .") regexp($regexp) match($match)"); |
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32 if ($display == 0) { // display on all except listed urls |
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33 if (empty($urls) || !$match) { |
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34 _debug_echo("ad_channel_cache: aid($aid) is valid"); |
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35 $valid[] = $aid; |
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36 break; |
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37 } |
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38 } |
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39 else { // display only on listed urls |
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40 if (!empty($urls) && $match) { |
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41 _debug_echo("ad_channel_cache: aid($aid) is valid"); |
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42 $valid[] = $aid; |
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43 break; |
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44 } |
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45 } |
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46 _debug_echo("ad_channel_cache: aid($aid) is not valid"); |
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47 } |
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48 } |
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49 else { |
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50 // no channel information for ad, it's valid |
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51 $display = $channels['display']; |
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52 _debug_echo("ad_channel_cache: aid($aid) has no channel info [$display]"); |
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53 switch ($display) { |
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54 case 0: |
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55 $nochannel[] = $aid; |
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56 _debug_echo("ad_channel_cache: aid($aid) is valid if no valid ads found in current channel"); |
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57 break; |
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58 case 1: |
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59 $valid[] = $aid; |
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60 _debug_echo("ad_channel_cache: aid($aid) is valid"); |
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61 break; |
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62 case 2: |
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63 _debug_echo("ad_channel_cache: aid($aid) is not valid"); |
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64 break; |
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65 } |
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66 } |
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67 } |
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68 |
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69 if (empty($valid) && !empty($nochannel)) { |
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70 _debug_echo("ad_channel_cache: using ads with no channel info"); |
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71 $valid = $nochannel; |
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72 } |
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73 |
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74 $premiere = adserve_cache('get_cache', 'premiere'); |
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75 $premieres = array(); |
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76 if (is_array($premiere)) { |
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77 foreach ($valid as $aid) { |
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78 if (in_array($aid, $premiere)) { |
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79 _debug_echo("ad_channel_cache: aid($aid) is premiere advertisement"); |
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80 $premieres[$aid] = $aid; |
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81 } |
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82 else { |
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83 _debug_echo("ad_channel_cache: aid($aid) is not a premiere advertisement"); |
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84 } |
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85 } |
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86 if (!empty($premieres)) { |
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87 _debug_echo("ad_channel_cache: returning premiere advertisements"); |
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88 return $premieres; |
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89 } |
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90 } |
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91 _debug_echo("ad_channel_cache: returning non-premiere advertisements"); |
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92 return $valid; |
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93 } |
