夜间福利网站,免费动漫av,一级做a爰片久久毛片免费陪,夜夜骑首页,黄色毛片视频,插插插操操操,综合av色

PHP常用正則表達(dá)式

時間:2025-10-28 16:09:18 php語言

PHP常用正則表達(dá)式

  header("Content-Type:text/html;charset=utf-8"),這一句一般都是用于設(shè)置頁面的字符集,防止出現(xiàn)亂碼,雖然跟本節(jié)沒多大關(guān)系,但也可以當(dāng)作基礎(chǔ)知識。

  /pic/strong>

  1

  2

  3

  $preg = '/^(https?:/pic/i';

  $str = 'www.liqingbo.cn';

  echo preg_match($preg, $str);

  /pic/strong>

  1

  2

  3

  $preg = '/^([a-z]+):/pic/i';

  $str = '/pic/p>

  echo preg_match($preg, $str);

  /pic/strong>

  1

  2

  3

  $preg = '/^(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?).){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/';

  $str = '255.255.255.250';

  echo preg_match($preg, $str);

  /pic/strong>

  1

  2

  3

  4

  $preg = '/^<([a-z]+)([^<]+)*(?:>(.*)</1>|s+/>)$/';

  $str = '<a href="/pic/a>';

  $res = preg_match_all($preg, $str, $matches);

  var_dump($matches);

  /pic/strong>

  1

  2

  3

  4

  5

  $preg = '/<img[^>]+(src="([^"<>']+)"|src='([^"<>']+)')[^<>]*>/';

  $html = '<div><a href="/pic/pic/src/img0.gif" /><img src="/pic/src/img1.gif" /></a></div>';

  $res = preg_match_all($preg, $html, $matches, PREG_PATTERN_ORDER);

  /pic/p>

  echo $matches[2][0]; /pic/p>

  /pic/strong>

  1

  2

  3

  $preg = '/^([a-z0-9_.-]+)@([a-z0-9.-]+).([a-z]+)$/i';

  $str = 'jeddy_liu-jin@gmail.com';

  echo preg_match($preg, $str);

  /pic/strong>

  1

  2

  3

  $preg = '/^[a-z0-9@_.-]{6,18}$/';

  $str = 'liujin@1234.com';

  echo preg_match($preg, $str);

  /pic/strong>

  1

  2

  3

  $preg = '/^[a-z0-9_-]{3,16}$/';

  $str = 'liujin-88';

  echo preg_match($preg, $str);

  /pic/strong>

  1

  2

  3

  $preg = '/^(0d{2,3})-?(d{7,8})$/';

  $str = '015-5415488';

  echo preg_match($preg, $str);

  /pic/strong>

  1

  2

  3

  $preg = '/^1[3|4|5|8]d{9}$/';

  $str = '18012345678';

  echo preg_match($preg, $str);

  /pic/strong>

  1

  2

  3

  $preg = '/^[1-9]d{5}$/';

  $str = '415000';

  echo preg_match($preg, $str);

  /pic/strong>

  1

  2

  3

  $preg = '/(^d{15}$)|(^d{18}$)/';

  $str = '430701198806520';

  echo preg_match($preg, $str);

  /pic/strong>

  1

  2

  3

  4

  $preg = '/^[x{4e00}-x{9fa5}]+$/u';

  $str = 'PHP博客';

  preg_match($preg, $str, $match);

  var_dump($match);


【PHP常用正則表達(dá)式】相關(guān)文章:

PHP常用的正則表達(dá)式11-06

PHP知識:PHP常用正則表達(dá)式大全03-16

PHP常用的正則表達(dá)式是什么02-26

用php常用表單驗證的正則表達(dá)式02-27

php漢字正則表達(dá)式12-08

php正則表達(dá)式的基本語法總結(jié)12-02

PHP知識:正則表達(dá)式基礎(chǔ)知識12-05

php過濾HTML標(biāo)簽、屬性等正則表達(dá)式02-22

在PHP中使用正則表達(dá)式進(jìn)行查找替換03-15