Currently viewing the category: "Practical Source Code"

Parsing a URI Reference with a Regular Expression

By On 04/10/2008 · Leave a Comment

From rfc2396 Appendix B ^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\?([^#]*))?(#(.*))? 12 3 4 5 6 7 8 9 For example, matching the above expression to http://www.ics.uci.edu/pub/ietf/uri/#Related results in the following subexpression matches: $1 = http: $2 = http $3 = //www.ics.uci.edu $4 = www.ics.uci.edu $5 = /pub/ietf/uri/ $6 = <undefined> $7 = <undefined> $8 = #Related $9 = Related where [...]

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PHP CURL函数模拟浏览器抓取网站信息

By On 11/09/2008 · Leave a Comment

set_time_limit(0);

function _rand() {

$length=26;

$chars = “0123456789abcdefghijklmnopqrstuvwxyz”;

$max = strlen($chars) – 1;

mt_srand((double)microtime() * 1000000);

$string = ”;

for($i = 0; $i < $length; $i++) {

$string .= $chars[mt_rand(0, $max)];

}

return $string;

} [...]

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Buffered File Download in PHP

By On 11/09/2008 · Leave a Comment

From http://www.php.net/manual/en/function.fread.php#84115

I couldn’t get some of the previous resume scripts to work with Free Download Manager or Firefox. I did some clean up and modified the code a little.

Changes:
1. Added a Flag to specify if you want download to be resumable or not
2. Some error [...]

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