PHP替换文章内链的函数 php关键词替换(含屏蔽还原原始链接功能)

3. /*

4. * PHP替换文章内链
5. * by bbs.it-home.org
6. */
7. function _base64_encode($t,$str) {
8. return $t."\"".base64_encode($str)."\"";
9. }
10. function _base64_decode($t,$str) {
11. return $t."\"".base64_decode($str)."\"";
12. }

13. function _keylinks($txt, $replacenum = '',$link_mode = 1) {

14. /* 屏蔽原始的 a */
15. $replace_a = "\_base64_encode('ori_a=','\\0')";
16. $replace1_a = "\stripslashes(base64_decode('\\1'))";
17. $search_a = "/.*?/isxe";
18. $search1_a = "/ori_a=(\".*?\")/isxe";
19. $txt = preg_replace($search_a, $replace_a, $txt);

20. /* 屏蔽alt title src */

21. $search = "/(alt\s*=\s*|title\s*=\s*|src\s*=\s*) # find ([\"\'])?(.*?) # find single or double quote
22. (?(2)\\2|\s+?) # if quote found, match up to next matching
23. # quote, otherwise match up to next space
24. /isxe";
25. $replace = "\_base64_encode('\\1','\\3')";
26. $replace1 = "\_base64_decode('\\1','\\3')";
27. $txt = preg_replace($search, $replace, $txt);
29. echo $txt;
30. echo "
    http://bbs.it-home.org/
    
    
    
    ";
31. /*
32. $keywords = $this->data['keywords'];
33. if($keywords) $keywords = strpos(',',$keywords) === false ? explode(' ',$keywords) : explode(',',$keywords);
34. if($link_mode && !empty($keywords)) {
35. foreach($keywords as $keyword) {
36. $linkdatas[] = $keyword;
37. }
38. } else {
39. $linkdatas = getcache('keylink','commons');
40. }
41. if($linkdatas) {
42. $word = $replacement = array();
43. foreach($linkdatas as $v) {
44. if($link_mode && $keywords) {
45. $word1[] = '/'.preg_quote($v, '/').'/';
46. $word2[] = $v;
47. $replacement[] = ''.$v.'';
48. } else {
49. $word1[] = '/'.preg_quote($v[0], '/').'/';
50. $word2[] = $v[0];
52. $replacement[] = ''.$v[0].'';
53. }
54. }
55. if($replacenum != '') {
56. $txt = preg_replace($word1, $replacement, $txt, $replacenum);
57. } else {
58. $txt = str_replace($word2, $replacement, $txt);
59. }
60. }
61. */
63. /* 还原原始 a */
64. $txt = preg_replace($search1_a, $replace1_a, $txt);
65. /* 还原alt title src */
66. $txt = preg_replace($search, $replace1, $txt);
68. echo $txt;
70. return $txt;
71. }
73. $con = "

    　　性生活过度伤害前列腺。和谐美满的性生活，是男女生理的天然需要，是夫妻感情的粘合剂之一，是夫妻生活必不少的重要组成部分。但是有此想法的夫妻可要注意了。因为做x爱时间并非越长越好，夫妻的性生活的和谐与美满也不由性xai时间的长短来决定。反而，超时性XZ爱，还会影响到夫妻的健康，甚至引发各种疾病。

74. 

    ";

75. _keylinks($con);

76. ?>

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