PHP/File Directory/file get contents — различия между версиями

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м (1 версия)
 
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Текущая версия на 07:04, 26 мая 2010

Checking for an error from file_get_contents()

 
$page = file_get_contents("page-template.html");
if ($page === false) {
   print "Couldn"t load template: $php_errormsg";
} else {
   // ... process template here
}
//page-template.html
<html>
<head><title>{page_title}</title></head>
<body bgcolor="{color}">
<h1>Hello, {name}</h1>
</body>
</html>



Check net speed by loading a file

 
<?php
   $data = file_get_contents("data.txt");
   $fsize = filesize("textfile.txt") / 1024;
   $start = time();
   $stop = time();
   $duration = $stop - $start;
   $speed = round($fsize / $duration,2);
   echo "Your network speed: $speed KB/sec.";
?>



Fetching a URL with file_get_contents()

 
<?php
$page = file_get_contents("http://www.example.ru/robots.txt");
?>



file_get_contents.php

 
<?php
   $userfile= file_get_contents("data.txt");
   $users = explode("\n",$userfile);
   foreach ($users as $user) {
      list($name, $email) = explode(" ", $user);
      echo "<a href=\"mailto:$email\">$name/a> <br />";
   }
?>



file_put_contents( ) writes to a file with the equivalent of fopen( ), fwrite( ), and fclose( ) all in one function, just like file_get_contents( ).

 
<?
    $filename = "data.txt";
    $myarray[ ] = "This is line one";
    $myarray[ ] = "This is line two";
    $myarray[ ] = "This is line three";
    $mystring = implode("\n", $myarray);
    $numbytes = file_put_contents($filename, $mystring);
    print "$numbytes bytes written\n";
?>



Reading a file into a string

 
<?php
$people = file_get_contents("people.txt");
if (preg_match("/Names:.*(David|Susannah)/i",$people)) {
    print "people.txt matches.";
}
?>



Retrieving a protected page

 
<?php
$url = "http://tom:password@www.example.ru/secrets.php";
$page = file_get_contents($url);
?>



Retrieving a remote page with file_get_contents()

 
<?
$zip = 98052;
$weather_page = file_get_contents("http://www.demo.ru/z.php?inputstring=" . $zip);
$page = strstr($weather_page,"Detailed Forecast");
$table_start = strpos($page, "<table");
$table_end  = strpos($page, "</table>") + 8;
print substr($page, $table_start, $table_end - $table_start);
?>



Use file_get_contents with a URL

 
<?
$url = "http://www.demo.ru/";
$page = file_get_contents($url);
if (preg_match_all("@<a href="[^"]+">.+?</a>@", $page, $matches)) {
    foreach ($matches[0] as $link) {
        print "$link <br/>\n";
    }
}
?>
Источник — «http://wbex.ru/index.php?title=PHP/File_Directory/file_get_contents&oldid=621»