php读取本地文件操作函数

<?php
$file = "111.txt";
$fp = fopen($file,"r");
if ($fp){
 while(!feof($fp)){
  //第二个参数为读取的长度
  $data = fread($fp, 1000);
 }
 fclose($fp);
}
echo $data;
?>

<?php
echo file_get_contents("test.txt");
?>

输出：

This is a test file with test text.

<?php
$dir = opendir('/movie');
while(($file = readdir($dir))!=false){
  if ($file!="." && $file!="..") {
    $ns = explode('.', $file);
    echo $ns[0];
  }
}
closedir($dir);

?>

<?php
echo strtolower("Hello WORLD!");
?>

<?php
$str = "Mary Had A Little Lamb and She LOVED It So";
$str = strtoupper($str);
echo $str; // 打印 MARY HAD A LITTLE LAMB AND SHE LOVED IT SO
?>

<?php
 $foo = 'hello world!';
 $foo = ucwords($foo);             // Hello World!
 
 
 $bar = 'HELLO WORLD!';
 $bar = ucwords($bar);             // HELLO WORLD!
 $bar = ucwords(strtolower($bar)); // Hello World!
 ?>

<?php
 $foo = 'HelloWorld';
 $foo = lcfirst($foo);             // helloWorld
 
 $bar = 'HELLO WORLD!';
 $bar = lcfirst($bar);             // hELLO WORLD!
 $bar = lcfirst(strtoupper($bar)); // hELLO WORLD!
 ?>

1 echo date('Y-m-d H:i:s',strtotime('now')+8*60*60);
结果:2013-04-05 03:15:02

1 echo date('Y-m-d H:i:s',time()+8*60*60);
结果:2013-04-05 03:15:02

1 echo date('Y-m-d H:i:s',strtotime("+10 days")+8*60*60);

1 strtotime("+1 week")+8*60*60

strtotime("+7 days");

1 strtotime ("+1 week 2 days 4 hours 2 seconds")+8*60*60
1 echo date('Y-m-d H:i:s',strtotime ("+1 week 2 days 4 hours 2 seconds")+8*60*60);

1 strtotime ("last Monday")+8*60*60
1 echo date('Y-m-d H:i:s',strtotime ("last Monday")+8*60*60);

1 strtotime ("next Thursday")+8*60*60
1 echo date('Y-m-d H:i:s',strtotime ("next Thursday")+8*60*60);

<?php
$time="2012年11月23日15时50时20秒";
$times="2013-01-14 09:09:09";
if(strtotime($time)-strtotime($times)<0){
 echo "时间：".$time."&nbsp;早于时间：".$times;
}else{
 echo "时间：".$times."&nbsp;早于时间：".$time;
}
echo "<br />它们相差的时间值是：".(strtotime($time)-strtotime($times))
?>

<?php
preg_match_all("|<[^>]+>(.*)</[^>]+>|U",
    "<b>example: </b><div align=left>this is a test</div>",
    $out, PREG_PATTERN_ORDER);
echo $out[0][0] . ", " . $out[0][1] . "n";
echo $out[1][0] . ", " . $out[1][1] . "n";
?>

$get = 'd1b3cid419299191rs好脚本';
$rs_pos = strpos($get,'rs');
if($rs_pos !== false)
{
    $rs = substr($get,$rs_pos);
    $rs = str_replace('rs','',$rs);
    $rs = strpos($rs,'/')!==false ? substr($rs,0,strpos($rs,'/')) : $rs;
    $get = substr($get,0,$rs_pos);
}
echo 'keywords='.$rs;
echo '<br>';
preg_match_all('/([a-z]*)([0-9]+)/',$get,$m);
if($m)
{
        $k = $v = '';
        $count = count($m[1]);
        for($i = 0; $i <= $count; $i++)
        {
            ${$m[1][$i]} = $m[2][$i];
            if(isset(${$m[1][$i]}))
            {   
                echo $m[1][$i].'='.${$m[1][$i]};
                echo '<br>';
            }
        }
}

<?php
$con = file_get_contents("http://www.111cn.net/");
$pattern="/<[img|IMG].*?src=['|"](.*?(?:[.gif|.jpg|.png]))['|"].*?[/]?>/";
preg_match_all($pattern,$con,$match);
print_r($match);
?>

输出代码

Array
(
[0] => Array
(
[0] => <img src="http://www.111cn.net/usr/themes/dddefault/images/logo.png" alt="" />
[1] => <img style="display: block; margin-left: auto; margin-right: auto;" title="" src="http://www.111cn.net/usr/uploads/2012/09/531656480.jpg" alt="2" />
[2] => <img style="display: block; margin-left: auto; margin-right: auto;" src="http://www.111cn.net/usr/uploads/2012/09/2647136297.jpg" alt="875EA1C00E50B4542797E24FA6E7E1F2.jpg" />
)
[1] => Array
(
[0] => http://www.111cn.net/usr/themes/dddefault/images/logo.png
[1] => http://www.111cn.net/usr/uploads/2012/09/531656480.jpg
[2] => http://www.111cn.net/usr/uploads/2012/09/2647136297.jpg
)
)

< ?php
$file_contents = file_get_contents(''http://www.111cn.net/'');
echo $file_contents;
?>

function file_get_content($url) {
if (function_exists(‘file_get_contents')) {
$file_contents = @file_get_contents($url);
}
if ($file_contents == ”) {
$ch = curl_init();
$timeout = 30;
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout);
$file_contents = curl_exec($ch);
curl_close($ch);
}
return $file_contents;
}