PHP file_get_contents () read _php tutorials for capturing remote file content

Let's take a look at the PHP manual about the file_get_contents () function to read the entire file into a string and file (), unlike the file_get_contents () that reads the files into a string.

The file_get_contents () function is the preferred method for reading the contents of a file into a string

Above is the Help manual is a one-time to read all the content into memory, the following example we will also talk about

_get_contents can read a remote file into a string,
And the separation of the file line is "RN"
Explode to separate strings by "RN"

The code is as follows	Copy Code
$shadu _url = "http://localhost/demo.html"; $shadu _str = file_get_contents ($shadu _url); $line _arr = Explode ("rn", $shadu _str);

The remote request address, the returned processing result information is a string, each field with ' | ' Separated, lines and lines separated by ' RN '
Return content as Id,name,time,email, respectively

Sample Content
1|simaopig|2009-04-01|demo@simaopig.com
2|xiaoxiaozi|2009-04-02|demo@xiaoxiaozi.com
If I want to get each field operation as follows

The code is as follows

Copy Code

$shadu _url = "http://localhost/demo.html"; $shadu _str = file_get_contents ($shadu _url); $line _arr = Explode ("rn", $shadu _str); $result = Array (); if (Empty ($line _arr)) { return Array (); } foreach ($line _arr as $line _str) { $record _arr = explode ("|", $line _STR); if ($record _arr[0] = = "-1") { Log Continue } $data = Array (); $data [' id '] = $record _arr[0]; $data [' name '] = $record _arr[1]; $data [' time '] = $record _arr[2]; $data [' email '] = $record _arr[3]; $result [] = $data; } Var_dump ($result);

Check it out for yourself, haha.

Example 2

Capturing the contents of an HTML page

The code is as follows

Copy Code

Nationwide, judging whether the $request_uri contains HTML if (!strpos ($_server["Request_uri"], ". html")) { $page = "http://qq.ip138.com/weather/"; $html = file_get_contents ($page, ' R '); $pattern = "/National major cities, counties and the next five days of weather trend forecast online query(.*?) /si "; The HTML between regular matches Preg_match ($pattern, $html, $PG); echo ""; Regular replace remote address to local address $p =preg_replace ('//weather/(w+)/index.htm/', ' tq.php/$1.html ', $PG [1]); Echo $p; } Province, the judge condition is $request_uri whether contain? else if (!strpos ($_server["Request_uri"], "?")) { Yoyo recommends using split to get data, here is the name of the province to get $province =explode ("/", $_server["Request_uri"]); $province =explode (".", $province [Count ($province)-1]); $province = $province [0]; I write my own regular notes, I feel bad, but the effect is equal to the above Preg_match ('/[^/]+[. ( html)]$/', $_server["Request_uri"], $pro); $province =preg_replace ('/.html/', ', $pro [0]); $page = "http://qq.ip138.com/weather/". $province. " /index.htm "; Try to open the page before getting the HTML data to prevent a malicious input address from causing an error if (! @fopen ($page, "R")) { Die ("Sorry, this address does not exist! Click here to return"); Exit (0); } $html = file_get_contents ($page, ' R '); $pattern = "/five-day weather trend forecast(.*?) Please input city/si "; Preg_match ($pattern, $html, $PG); echo ""; Regular replacement, get province, city $p =preg_replace ('//weather/(w+)/(w+). htm/', ' $2.html?pro=$1 ', $PG [1]); Echo $p; } else { City, pass the province through get $pro =$_request[' Pro ']; $city =explode ("/", $_server["Request_uri"]); $city =explode (".", $city [Count ($city)-1]); $city = $city [0]; Preg_match ('/[^/]+[. ( HTML)]+[?] /', $_server["Request_uri"], $cit); $city =preg_replace ('/.html?/', ', $cit [0]); $page = "http://qq.ip138.com/weather/". $pro. " /". $city.". HTM "; if (! @fopen ($page, "R")) { Die ("Sorry, this address does not exist! Click here to return"); Exit (0); } $html = file_get_contents ($page, ' R '); $pattern = "/five-day weather trend forecast(.*?) Please input city/si "; Preg_match ($pattern, $html, $PG); echo ""; Get the real picture address $p =preg_replace ('//image//', ' http://qq.ip138.com/image/', $PG [1]); Echo $p; } ?>

http://www.bkjia.com/PHPjc/629097.html www.bkjia.com true http://www.bkjia.com/PHPjc/629097.html techarticle Let's take a look at the PHP manual about the file_get_contents () function to read the entire file into a string and file (), unlike the file_get_contents () that reads the files into a string. ...

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