PHP從字符串中移除URL

Question

如果我有一個包含url的字符串（例如，我們將其稱爲$ url），例如;

$url = "Here is a funny site http://www.tunyurl.com/34934"; 

如何從字符串中刪除網址？ 難度是，url可能也會出現沒有http：//，比如;

$url = "Here is another funny site www.tinyurl.com/55555"; 

沒有HTML存在。如果http或www存在，我將如何開始搜索，然後刪除文本/數字/符號，直到第一個空格？

Answer 1

我重新閱讀的問題，這裏是將預期那樣發揮功能：

function cleaner($url) { 
    $U = explode(' ',$url); 

    $W =array(); 
    foreach ($U as $k => $u) { 
    if (stristr($u,'http') || (count(explode('.',$u)) > 1)) { 
     unset($U[$k]); 
     return cleaner(implode(' ',$U)); 
    } 
    } 
    return implode(' ',$U); 
} 

$url = "Here is another funny site www.tinyurl.com/55555 and http://www.tinyurl.com/55555 and img.hostingsite.com/badpic.jpg"; 
echo "Cleaned: " . cleaner($url); 

編輯＃2 /＃3（我必須是無聊）。這裏是驗證存在的URL中的TLD版本：

function containsTLD($string) { 
    preg_match(
    "/(AC($|\/)|\.AD($|\/)|\.AE($|\/)|\.AERO($|\/)|\.AF($|\/)|\.AG($|\/)|\.AI($|\/)|\.AL($|\/)|\.AM($|\/)|\.AN($|\/)|\.AO($|\/)|\.AQ($|\/)|\.AR($|\/)|\.ARPA($|\/)|\.AS($|\/)|\.ASIA($|\/)|\.AT($|\/)|\.AU($|\/)|\.AW($|\/)|\.AX($|\/)|\.AZ($|\/)|\.BA($|\/)|\.BB($|\/)|\.BD($|\/)|\.BE($|\/)|\.BF($|\/)|\.BG($|\/)|\.BH($|\/)|\.BI($|\/)|\.BIZ($|\/)|\.BJ($|\/)|\.BM($|\/)|\.BN($|\/)|\.BO($|\/)|\.BR($|\/)|\.BS($|\/)|\.BT($|\/)|\.BV($|\/)|\.BW($|\/)|\.BY($|\/)|\.BZ($|\/)|\.CA($|\/)|\.CAT($|\/)|\.CC($|\/)|\.CD($|\/)|\.CF($|\/)|\.CG($|\/)|\.CH($|\/)|\.CI($|\/)|\.CK($|\/)|\.CL($|\/)|\.CM($|\/)|\.CN($|\/)|\.CO($|\/)|\.COM($|\/)|\.COOP($|\/)|\.CR($|\/)|\.CU($|\/)|\.CV($|\/)|\.CX($|\/)|\.CY($|\/)|\.CZ($|\/)|\.DE($|\/)|\.DJ($|\/)|\.DK($|\/)|\.DM($|\/)|\.DO($|\/)|\.DZ($|\/)|\.EC($|\/)|\.EDU($|\/)|\.EE($|\/)|\.EG($|\/)|\.ER($|\/)|\.ES($|\/)|\.ET($|\/)|\.EU($|\/)|\.FI($|\/)|\.FJ($|\/)|\.FK($|\/)|\.FM($|\/)|\.FO($|\/)|\.FR($|\/)|\.GA($|\/)|\.GB($|\/)|\.GD($|\/)|\.GE($|\/)|\.GF($|\/)|\.GG($|\/)|\.GH($|\/)|\.GI($|\/)|\.GL($|\/)|\.GM($|\/)|\.GN($|\/)|\.GOV($|\/)|\.GP($|\/)|\.GQ($|\/)|\.GR($|\/)|\.GS($|\/)|\.GT($|\/)|\.GU($|\/)|\.GW($|\/)|\.GY($|\/)|\.HK($|\/)|\.HM($|\/)|\.HN($|\/)|\.HR($|\/)|\.HT($|\/)|\.HU($|\/)|\.ID($|\/)|\.IE($|\/)|\.IL($|\/)|\.IM($|\/)|\.IN($|\/)|\.INFO($|\/)|\.INT($|\/)|\.IO($|\/)|\.IQ($|\/)|\.IR($|\/)|\.IS($|\/)|\.IT($|\/)|\.JE($|\/)|\.JM($|\/)|\.JO($|\/)|\.JOBS($|\/)|\.JP($|\/)|\.KE($|\/)|\.KG($|\/)|\.KH($|\/)|\.KI($|\/)|\.KM($|\/)|\.KN($|\/)|\.KP($|\/)|\.KR($|\/)|\.KW($|\/)|\.KY($|\/)|\.KZ($|\/)|\.LA($|\/)|\.LB($|\/)|\.LC($|\/)|\.LI($|\/)|\.LK($|\/)|\.LR($|\/)|\.LS($|\/)|\.LT($|\/)|\.LU($|\/)|\.LV($|\/)|\.LY($|\/)|\.MA($|\/)|\.MC($|\/)|\.MD($|\/)|\.ME($|\/)|\.MG($|\/)|\.MH($|\/)|\.MIL($|\/)|\.MK($|\/)|\.ML($|\/)|\.MM($|\/)|\.MN($|\/)|\.MO($|\/)|\.MOBI($|\/)|\.MP($|\/)|\.MQ($|\/)|\.MR($|\/)|\.MS($|\/)|\.MT($|\/)|\.MU($|\/)|\.MUSEUM($|\/)|\.MV($|\/)|\.MW($|\/)|\.MX($|\/)|\.MY($|\/)|\.MZ($|\/)|\.NA($|\/)|\.NAME($|\/)|\.NC($|\/)|\.NE($|\/)|\.NET($|\/)|\.NF($|\/)|\.NG($|\/)|\.NI($|\/)|\.NL($|\/)|\.NO($|\/)|\.NP($|\/)|\.NR($|\/)|\.NU($|\/)|\.NZ($|\/)|\.OM($|\/)|\.ORG($|\/)|\.PA($|\/)|\.PE($|\/)|\.PF($|\/)|\.PG($|\/)|\.PH($|\/)|\.PK($|\/)|\.PL($|\/)|\.PM($|\/)|\.PN($|\/)|\.PR($|\/)|\.PRO($|\/)|\.PS($|\/)|\.PT($|\/)|\.PW($|\/)|\.PY($|\/)|\.QA($|\/)|\.RE($|\/)|\.RO($|\/)|\.RS($|\/)|\.RU($|\/)|\.RW($|\/)|\.SA($|\/)|\.SB($|\/)|\.SC($|\/)|\.SD($|\/)|\.SE($|\/)|\.SG($|\/)|\.SH($|\/)|\.SI($|\/)|\.SJ($|\/)|\.SK($|\/)|\.SL($|\/)|\.SM($|\/)|\.SN($|\/)|\.SO($|\/)|\.SR($|\/)|\.ST($|\/)|\.SU($|\/)|\.SV($|\/)|\.SY($|\/)|\.SZ($|\/)|\.TC($|\/)|\.TD($|\/)|\.TEL($|\/)|\.TF($|\/)|\.TG($|\/)|\.TH($|\/)|\.TJ($|\/)|\.TK($|\/)|\.TL($|\/)|\.TM($|\/)|\.TN($|\/)|\.TO($|\/)|\.TP($|\/)|\.TR($|\/)|\.TRAVEL($|\/)|\.TT($|\/)|\.TV($|\/)|\.TW($|\/)|\.TZ($|\/)|\.UA($|\/)|\.UG($|\/)|\.UK($|\/)|\.US($|\/)|\.UY($|\/)|\.UZ($|\/)|\.VA($|\/)|\.VC($|\/)|\.VE($|\/)|\.VG($|\/)|\.VI($|\/)|\.VN($|\/)|\.VU($|\/)|\.WF($|\/)|\.WS($|\/)|\.XN--0ZWM56D($|\/)|\.XN--11B5BS3A9AJ6G($|\/)|\.XN--80AKHBYKNJ4F($|\/)|\.XN--9T4B11YI5A($|\/)|\.XN--DEBA0AD($|\/)|\.XN--G6W251D($|\/)|\.XN--HGBK6AJ7F53BBA($|\/)|\.XN--HLCJ6AYA9ESC7A($|\/)|\.XN--JXALPDLP($|\/)|\.XN--KGBECHTV($|\/)|\.XN--ZCKZAH($|\/)|\.YE($|\/)|\.YT($|\/)|\.YU($|\/)|\.ZA($|\/)|\.ZM($|\/)|\.ZW)/i", 
    $string, 
    $M); 
    $has_tld = (count($M) > 0) ? true : false; 
    return $has_tld; 
} 

function cleaner($url) { 
    $U = explode(' ',$url); 

    $W =array(); 
    foreach ($U as $k => $u) { 
    if (stristr($u,".")) { //only preg_match if there is a dot  
     if (containsTLD($u) === true) { 
     unset($U[$k]); 
     return cleaner(implode(' ',$U)); 
    }  
    } 
    } 
    return implode(' ',$U); 
} 


$url = "Here is another funny site badurl.badone somesite.ca/worse.jpg but this badsite.com www.tinyurl.com/55555 and http://www.tinyurl.com/55555 and img.hostingsite.com/badpic.jpg"; 
echo "Cleaned: " . cleaner($url); 

回報：針對URL

Cleaned: Here is another funny site badurl.badone but this and and 

Answer 2

你需要編寫一個正則表達式來提取網址。

Answer 3

解析的文字是很難，尋找預先存在的，經過大量測試代碼已經這樣做了因爲你會比編寫自己的代碼和缺少邊緣案例更好。例如，我會看看Django的urlize中的過程，該過程將URL包含在錨中。您可以將它移植到PHP中，而不是將URL包裝在錨點中 - 只需從文本中刪除它們即可。

Answer 4

$string = preg_replace('/\b(https?|ftp|file):\/\/[-A-Z0-9+&@#\/%?=~_|$!:,.;]*[A-Z0-9+&@#\/%=~_|$]/i', '', $string); 

Answer 5

感謝邁克，

更新了一下，返回通知錯誤，

'/\b(https?|ftp|file):\/\/[-A-Z0-9+&@#\/%?=~_|$!:,.;]*[A-Z0-9+&@#\/%=~_|$]/i'

$string = preg_replace('/\b(https?|ftp|file):\/\/[-A-Z0-9+&@#\/%?=~_|$!:,.;]*[A-Z0-9+&@#\/%=~_|$]/i', '', $string);

Answer 6

$url = "Here is a funny site http://www.tunyurl.com/34934"; 
$replace = 'http www .com .org .net'; 
$with = ''; 

$clean_url = clean($url,$replace,$with); 
echo $clean_url; 

function clean($url,$replace,$with) { 

    $replace = explode(" ",$replace); 
    $new_string = ''; 
    $check = explode(" ",$url); 

    foreach($check AS $key => $value) { 
    foreach($replace AS $key2 => $value2) { 
     if (-1 < strpos(strtolower($value), strtolower($value2)) ) { 
      $value = $with; 
      break; 
     } 
    } 
    $new_string .= " ".$value; 
    } 
return $new_string; 
}