假设有一个名为:
的变量src="http://www.test.com/1455/"||src="http://www.test.com/image/1456/"||
现在我想获取网址http://www.test.com/1455/
。
以下是我的代码。但它不起作用。
$url = 'src="http://www.test.com/1455/"||src="http://www.test.com/image/1456/"||';
$a = explode("src=\"",$url);
$b = explode("||",$a);
$handle = fopen("output.txt", 'a')) !== FALSE
fwrite($handle2, "{$b[0]}\n");
答案 0 :(得分:1)
使用类似于此的正则表达式,当然您可以根据需要修改它。这只是一个例子,但它适用于你
$url = 'src="http://www.test.com/1455/"||src="http://www.test.com/image/1456/"||';
preg_match_all('/\b(?:(?:https?|ftp|file):\/\/|www\.|ftp\.)[-A-Z0-9+&@#\/%=~_|$?!:,.]*[A-Z0-9+&@#\/%=~_|$]/i', $url, $result, PREG_PATTERN_ORDER);
print_R($result);
它会打印
Array
(
[0] => Array
(
[0] => http://www.test.com/1455/
[1] => http://www.test.com/image/1456/
)
)
并将其写入文本文件:
$handle = fopen("output.txt", 'a');
foreach($result[0] as $url){
fwrite($handle, $url."\n");
}
fclose($handle);
有关正则表达式的详细信息http://php.net/manual/en/function.preg-match.php
答案 1 :(得分:1)
解决更一般的情况。此代码将您的字符串转换为URL查询格式,并通过parse_str
函数
$url = 'src="http://www.test.com/1455/"||src="http://www.test.com/image/1456/"||var1=aaa||var2=bbb||var2=bbb';
$url = str_replace('||', '&', $url);
$url = preg_replace('/([^\]])=/', '$1[]=', $url);
$params = array();
parse_str($url, $params);
print_r($params);
输出:
Array
(
[src] => Array
(
[0] => "http://www.test.com/1455/"
[1] => "http://www.test.com/image/1456/"
)
[var1] => Array
(
[0] => aaa
)
[var2] => Array
(
[0] => bbb
[1] => bbb
)
)
然后你可以用这个数组做你想要的一切
答案 2 :(得分:0)
$url = 'src="http://www.test.com/1455/"||src="http://www.test.com/image/1456/"||';
$a = explode("||",$url);
$handle = fopen("output.txt", 'a');
foreach($a as &$val)
{
$val = str_replace("src=\"","",$val);
$val = str_replace("\"","",$val);
fwrite($handle, "{$val}\r\n");
}