必须收藏的php实用代码片段

function generateCsv($data, $delimiter = ',', $enclosure = '"') {  $handle = fopen('php://temp', 'r+');  foreach ($data as $line) {      fputcsv($handle, $line, $delimiter, $enclosure);  }  rewind($handle);  while (!feof($handle)) {      $contents .= fread($handle, 8192);  }  fclose($handle);  return $contents;}  

<?php$data[0] = "apple";$data[1] = "oranges";generateCsv($data, $delimiter = ',', $enclosure = '"');?>

$xml_string="<?xml version='1.0'?><moleculedb>  <molecule name='Benzine'>    <symbol>ben</symbol>    <code>A</code>  </molecule>  <molecule name='Water'>    <symbol>h2o</symbol>    <code>K</code>  </molecule></moleculedb>";   //load the xml string using simplexml function$xml = simplexml_load_string($xml_string);   //loop through the each node of moleculeforeach ($xml->molecule as $record){  //attribute are accessted by  echo $record['name'], ' ';  //node are accessted by -> operator  echo $record->symbol, ' ';  echo $record->code, '';}

$json_string='{"id":1,"name":"rolf","country":"russia","office":["google","oracle"]} ';$obj=json_decode($json_string);//print the parsed dataecho $obj->name; //displays rolfecho $obj->office[0]; //displays google

function current_url(){$url = "http://" . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];$validURL = str_replace("&", "&", $url);return validURL;}

<?phpecho "Currently you are on: ".current_url();?>

function my_twitter($username){   $no_of_tweets = 1;   $feed = "http://search.twitter.com/search.atom?q=from:" . $username . "&rpp=" . $no_of_tweets;   $xml = simplexml_load_file($feed);  foreach($xml->children() as $child) {    foreach ($child as $value) {      if($value->getName() == "link") $link = $value['href'];      if($value->getName() == "content") {        $content = $value . "";    echo '<p class="twit">'.$content.' <a class="twt" href="'.$link.'"      }      }  }  }  

<?php$handle = "koonktech";my_twitter($handle);?>

function tweetCount($url) {  $content = file_get_contents("http://api.tweetmeme.com/url_info?url=".$url);  $element = new SimpleXmlElement($content);  $retweets = $element->story->url_count;  if($retweets){    return $retweets;  } else {    return 0;  }}  

<?php$url = "http://blog.koonk.com";$count = tweetCount($url);return $count;?>

<?php$date1 = date( 'Y-m-d' );$date2 = "2015-12-04";$diff = abs(strtotime($date2) - strtotime($date1));$years = floor($diff / (365*60*60*24));$months = floor(($diff - $years * 365*60*60*24) / (30*60*60*24));$days = floor(($diff - $years * 365*60*60*24 - $months*30*60*60*24)/ (60*60*24));printf("%d years, %d months, %d days/n", $years, $months, $days);-------------------------------------------------------- OR$date1 = new DateTime("2007-03-24");$date2 = new DateTime("2009-06-26");$interval = $date1->diff($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, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);  $days_in_month = array(31, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);  _date_range_limit(1, 13, 12, "m", "y", &$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, 60, "s", "i", $result);  $result = _date_range_limit(0, 60, 60, "i", "h", $result);  $result = _date_range_limit(0, 24, 24, "h", "d", $result);  $result = _date_range_limit(0, 12, 12, "m", "y", $result);  $result = _date_range_limit_days(&$base, &$result);  $result = _date_range_limit(0, 12, 12, "m", "y", $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", "m", "d", "h", "i", "s");  $a = array_combine($key, array_map("intval", explode(" ", date("Y m d H i s", $one))));  $b = array_combine($key, array_map("intval", explode(" ", date("Y m d H i s", $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 '<pre>';print_r( _date_diff( strtotime($date), time() ) );echo '</pre>';?>

function Delete($path){  if (is_dir($path) === true)  {    $files = array_diff(scandir($path), array('.', '..'));    foreach ($files as $file)    {      Delete(realpath($path) . '/' . $file);    }    return rmdir($path);  }  else if (is_file($path) === true)  {    return unlink($path);  }  return false;}

<?php$path = "images/";Delete($path); // This will delete images folder along with its contents.?>

function highlighter_text($text, $words){  $split_words = explode( " " , $words );  foreach($split_words as $word)  {    $color = "#4285F4";    $text = preg_replace("|($word)|Ui" ,      "<span style=/"color:".$color.";/"><b>$1</b></span>" , $text );  }  return $text;}

<?php$string = "I like chocolates and I like apples";$words = "apple";echo highlighter_text($string ,$words);?>

<?$filename = 'blog.csv';$fp = fopen($filename, 'w');$output = " Hello ";$output .= " World! ";$output .= "/r/n";fputs($fp, $output);fclose($fp);?>

function imagefromURL($image,$rename){$ch = curl_init($image);curl_setopt($ch, CURLOPT_HEADER, 0);curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);curl_setopt($ch, CURLOPT_BINARYTRANSFER,1);$rawdata=curl_exec ($ch);curl_close ($ch);$fp = fopen("$rename",'w');fwrite($fp, $rawdata);fclose($fp);}

<?php$url = "http://koonk.com/images/logo.png";$rename = "koonk.png";imagefromURL($url,$rename);?>

function isvalidURL($url){$check = 0;if (filter_var($url, FILTER_VALIDATE_URL) !== false) { $check = 1;}return $check;} 

<?php$url = "http://koonk.com";$check = checkvalidURL($url);echo $check; //if returns 1 then URL is valid.?>

function qr_code($data, $type = "TXT", $size ='150', $ec='L', $margin='0') {   $types = array("URL" =--> "http://", "TEL" => "TEL:", "TXT"=>"", "EMAIL" => "MAILTO:");  if(!in_array($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($ch, CURLOPT_RETURNTRANSFER, true);  curl_setopt($ch, CURLOPT_HEADER, false);  curl_setopt($ch, CURLOPT_TIMEOUT, 30);  $response = curl_exec($ch);  curl_close($ch);  return $response;}

<?phpheader("Content-type: image/png");echo qr_code("http://koonk.com", "URL");?>

function getDistanceBetweenPointsNew($latitude1, $longitude1, $latitude2, $longitude2) {  $theta = $longitude1 - $longitude2;  $miles = (sin(deg2rad($latitude1)) * sin(deg2rad($latitude2))) + (cos(deg2rad($latitude1)) * cos(deg2rad($latitude2)) * cos(deg2rad($theta)));  $miles = acos($miles);  $miles = rad2deg($miles);  $miles = $miles * 60 * 1.1515;  $feet = $miles * 5280;  $yards = $feet / 3;  $kilometers = $miles * 1.609344;  $meters = $kilometers * 1000;  return compact('miles','feet','yards','kilometers','meters');}

<?php$point1 = array('lat' => 40.770623, 'long' => -73.964367);$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).'';}?>

function getTweets($hash_tag) {  $url = 'http://search.twitter.com/search.atom?q='.urlencode($hash_tag) ;  echo "<p>Connecting to <strong>$url</strong> ...</p>";  $ch = curl_init($url);  curl_setopt ($ch, CURLOPT_RETURNTRANSFER, TRUE);  $xml = curl_exec ($ch);  curl_close ($ch);  //If you want to see the response from Twitter, uncomment this next part out:  //echo "<p>Response:</p>";  //echo "<pre>".htmlspecialchars($xml)."</pre>";  $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 = $entry->id;    echo "<p>Tweet from ".$author.": <strong>".$text."</strong> <em>Posted ".date('n/j/y g:i a',$time)."</em></p>";  }  return true ;}

Friday the 13thfunction ordinal($cdnl){  $test_c = abs($cdnl) % 10;  $ext = ((abs($cdnl) %100 < 21 && abs($cdnl) %100 > 4) ? 'th'      : (($test_c < 4) ? ($test_c < 3) ? ($test_c < 2) ? ($test_c < 1)      ? 'th' : 'st' : 'nd' : 'rd' : 'th'));  return $cdnl.$ext;}

<?php$number = 10;echo ordinal($number); //output is 10th?>

<?php// local file that should be send to the client$local_file = 'test-file.zip';// filename that the user gets as default$download_file = 'your-download-name.zip';  // 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!');}?>

<?phpheader("Content-type: image/png");$string = $_GET['text'];$im = imagecreatefrompng("images/button.png");$color = imagecolorallocate($im, 255, 255, 255);$px = (imagesx($im) - 7.5 * strlen($string)) / 2;$py = 9;$fontSize = 1;imagestring($im, fontSize, $px, $py, $string, $color);imagepng($im);imagedestroy($im);?>

function remote_filesize($url, $user = "", $pw = ""){  ob_start();  $ch = curl_init($url);  curl_setopt($ch, CURLOPT_HEADER, 1);  curl_setopt($ch, CURLOPT_NOBODY, 1);  if(!empty($user) && !empty($pw))  {    $headers = array('Authorization: Basic ' . base64_encode("$user:$pw"));    curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);  }  $ok = curl_exec($ch);  curl_close($ch);  $head = ob_get_contents();  ob_end_clean();  $regex = '/Content-Length:/s([0-9].+?)/s/';  $count = preg_match($regex, $head, $matches);  return isset($matches[1]) ? $matches[1] : "unknown";}

<?php$file = "http://koonk.com/images/logo.png";$size = remote_filesize($url);echo $size;?>

<?php$pdf_file  = './pdf/demo.pdf';$save_to  = './jpg/demo.jpg';   //make sure that apache has permissions to write in this folder! (common problem)//execute ImageMagick command 'convert' and convert PDF to JPG with applied settingsexec('convert "'.$pdf_file.'" -colorspace RGB -resize 800 "'.$save_to.'"', $output, $return_var);if($return_var == 0) {       //if exec successfuly converted pdf to jpg  print "Conversion OK";}else print "Conversion failed.".$output;?>

function get_tiny_url($url) {   $ch = curl_init();   $timeout = 5;   curl_setopt($ch,CURLOPT_URL,'http://tinyurl.com/api-create.php?url='.$url);   curl_setopt($ch,CURLOPT_RETURNTRANSFER,1);   curl_setopt($ch,CURLOPT_CONNECTTIMEOUT,$timeout);   $data = curl_exec($ch);   curl_close($ch);   return $data; }

<?php$url = "http://blog.koonk.com/2015/07/Hello-World";$tinyurl = get_tiny_url($url);echo $tinyurl;?>

function str_between($string, $start, $end){$string = " ".$string; $ini = strpos($string,$start); if ($ini == 0) return ""; $ini += strlen($start); $len = strpos($string,$end,$ini) - $ini; return substr($string,$ini,$len); }function get_youtube_download_link(){  $youtube_link = $_GET['youtube'];  $youtube_page = file_get_contents($youtube_link);  $v_id = str_between($youtube_page, "&video_id=", "&");  $t_id = str_between($youtube_page, "&t=", "&");  $flv_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id";  $hq_flv_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id&fmt=6";  $mp4_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id&fmt=18";  $threegp_link = "http://www.youtube.com/get_video?video_id=$v_id&t=$t_id&fmt=17";  echo "/t/tDownload (right-click > save as):/n/t/t";  echo "<a href=/"$flv_link/">FLV</a>/n/t/t";  echo "<a href=/"$hq_flv_link/">HQ FLV (if available)</a>/n/t/t";  echo "<a href=/"$mp4_link/">MP4</a>/n/t/t";  echo "<a href=/"$threegp_link/">3GP</a>/n";}

Facebook (x mins age, y hours ago etc)function nicetime($date){  if(empty($date)) {    return "No date provided";  }      $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}";}

<?php$date = "2015-07-05 03:45";$result = nicetime($date); // 2 days ago?>