必须收藏的php实用代码片段

//load the xml string using simplexml function
$xml = simplexml_load_string($xml_string);

//loop through the each node of molecule
foreach ($xml->molecule as $record)
{
//attribute are accessted by
echo $record['name'],' ';
//node are accessted by -> operator
echo $record->symbol,' ';
echo $record->code,'';
}

name; //displays rolf echo $obj->office[0]; //displays google

getName() == "content") { $content = $value . ""; echo '

'; } } } }

story->url_count; if($retweets){ return $retweets; } else { return 0; } }

diff($date2); echo "difference " . $interval->y . " years," . $interval->m." months,".$interval->d." days "; // shows the total amount of days (not divided into years,months and days like above) echo "difference " . $interval->days . " days "; -------------------------------------------------------- OR

/**

• Calculate differences between two dates with precise semantics. Based on PHPs DateTime::diff()
• implementation by Derick Rethans. Ported to PHP by Emil H,2011-05-02. No rights reserved.
• See here for original code:
• http://svn.php.net/viewvc/php/php-src/trunk/ext/date/lib/tm2unixtime.c?revision=302890&view=markup
• http://svn.php.net/viewvc/php/php-src/trunk/ext/date/lib/interval.c?revision=298973&view=markup
  /
  function _date_range_limit($start,$end,$adj,$a,$b,$result)
  {
  if ($result[$a] < $start) {
  $result[$b] -= intval(($start - $result[$a] - 1) / $adj) + 1;
  $result[$a] += $adj intval(($start - $result[$a] - 1) / $adj + 1);
  }
  if ($result[$a] >= $end) {
  $result[$b] += intval($result[$a] / $adj);
  $result[$a] -= $adj * intval($result[$a] / $adj);
  }
  return $result;
  }
  function _date_range_limit_days($base,$result)
  {
  $days_in_month_leap = array(31,31,29,30,31);
  $days_in_month = array(31,28,31);
  _date_range_limit(1,13,12,"m","y",&$base);
  $year = $base["y"];
  $month = $base["m"];
  if (!$result["invert"]) {
  while ($result["d"] < 0) {
  $month--;
  if ($month < 1) {
  $month += 12;
  $year--;
  }
  $leapyear = $year % 400 == 0 || ($year % 100 != 0 && $year % 4 == 0);
  $days = $leapyear ? $days_in_month_leap[$month] : $days_in_month[$month];
  $result["d"] += $days;
  $result["m"]--;
  }
  } else {
  while ($result["d"] < 0) {
  $leapyear = $year % 400 == 0 || ($year % 100 != 0 && $year % 4 == 0);
  $days = $leapyear ? $days_in_month_leap[$month] : $days_in_month[$month];
  $result["d"] += $days;
  $result["m"]--;
  $month++;
  if ($month > 12) {
  $month -= 12;
  $year++;
  }
  }
  }
  return $result;
  }
  function _date_normalize($base,$result)
  {
  $result = _date_range_limit(0,60,"s","i",$result);
  $result = _date_range_limit(0,"h",24,"d",$result);
  $result = _date_range_limit_days(&$base,&$result);
  $result = _date_range_limit(0,$result);
  return $result;
  }
  /**
• Accepts two unix timestamps.
  */
  function _date_diff($one,$two)
  {
  $invert = false;
  if ($one > $two) {
  list($one,$two) = array($two,$one);
  $invert = true;
  }
  $key = array("y","s");
  $a = array_combine($key,array_map("intval",explode(" ",date("Y m d H i s",$one))));
  $b = array_combine($key,$two))));
  $result = array();
  $result["y"] = $b["y"] - $a["y"];
  $result["m"] = $b["m"] - $a["m"];
  $result["d"] = $b["d"] - $a["d"];
  $result["h"] = $b["h"] - $a["h"];
  $result["i"] = $b["i"] - $a["i"];
  $result["s"] = $b["s"] - $a["s"];
  $result["invert"] = $invert ? 1 : 0;
  $result["days"] = intval(abs(($one - $two)/86400));
  if ($invert) {
  _date_normalize(&$a,&$result);
  } else {
  _date_normalize(&$b,&$result);
  }
  return $result;
  }
  $date = "2014-12-04 19:37:22";
  echo '

  ';
  
  print_r( _date_diff( strtotime($date),time() ) );
  
  echo '

  ';
  ?>

$1",$text ); } return $text; }

"http://","TEL" => "TEL:","TXT"=>"","EMAIL" => "MAILTO:"); if(!in_array($type,array("URL","TEL","TXT","EMAIL"))) { $type = "TXT"; } if (!preg_match('/^'.$types[$type].'/',$data)) { $data = str_replace("","",$types[$type]).$data; } $ch = curl_init(); $data = urlencode($data); curl_setopt($ch,CURLOPT_URL,'http://chart.apis.google.com/chart'); curl_setopt($ch,CURLOPT_POST,true); curl_setopt($ch,CURLOPT_POSTFIELDS,'chs='.$size.'x'.$size.'&cht=qr&chld='.$ec.'|'.$margin.'&chl='.$data); curl_setopt($ch,false); curl_setopt($ch,CURLOPT_TIMEOUT,30); $response = curl_exec($ch); curl_close($ch); return $response; }

40.770623,'long' => -73.964367); $point2 = array('lat' => 40.758224,'long' => -73.917404); $distance = getDistanceBetweenPointsNew($point1['lat'],$point1['long'],$point2['lat'],$point2['long']); foreach ($distance as $unit => $value) { echo $unit.': '.number_format($value,4).''; } ?>

Connecting to

$url

...

"; $ch = curl_init($url); curl_setopt ($ch,TRUE); $xml = curl_exec ($ch); curl_close ($ch); //If you want to see the response from Twitter,uncomment this next part out: //echo "

Response:

"; //echo "

".htmlspecialchars($xml)."

"; $affected = 0; $twelement = new SimpleXMLElement($xml); foreach ($twelement->entry as $entry) { $text = trim($entry->title); $author = trim($entry->author->name); $time = strtotime($entry->published); $id = $entry->id; echo "

Tweet from ".$author.":

".$text."

Posted ".date('n/j/y g:i a',$time)."

"; } return true ; }

4) ? 'th' : (($test_c < 4) ? ($test_c < 3) ? ($test_c < 2) ? ($test_c < 1) ? 'th' : 'st' : 'nd' : 'rd' : 'th')); return $cdnl.$ext; }

// set the download rate limit (=> 20,5 kb/s)
$download_rate = 20.5;
if(file_exists($local_file) && is_file($local_file)) {
// send headers
header('Cache-control: private');
header('Content-Type: application/octet-stream');
header('Content-Length: '.filesize($local_file));
header('Content-Disposition: filename='.$download_file);

// flush content
flush();
// open file stream
$file = fopen($local_file,"r");
while(!feof($file)) {

// send the current file part to the browser
print fread($file,round($download_rate * 1024));  

// flush the content to the browser
flush();

// sleep one second
sleep(1);  

}

// close file stream
fclose($file);}
else {
die('Error: The file '.$local_file.' does not exist!');
}
?>

save as):ntt"; echo "ntt"; echo "ntt"; echo "ntt"; echo "n"; }

$periods = array("second","minute","hour","day","week","month","year","decade");
$lengths = array("60","60","24","7","4.35","12","10");

$now = time();
$unix_date = strtotime($date);

// check validity of date

if(empty($unix_date)) {
return "Bad date";
}
// is it future date or past date
if($now > $unix_date) {
$difference = $now - $unix_date;
$tense = "ago";

} else {
$difference = $unix_date - $now;
$tense = "from now";
}

for($j = 0; $difference >= $lengths[$j] && $j < count($lengths)-1; $j++) {
$difference /= $lengths[$j];
}

$difference = round($difference);

if($difference != 1) {
$periods[$j].= "s";
}

return "$difference $periods[$j] {$tense}";
}