10个实用的PHP代码片段
fmms
13年前
<p>1. 发送短信</p> <p>调用 <a href="/misc/goto?guid=4959500950995394787" rel="nofollow" target="_blank">TextMagic</a> API。</p> <pre class="brush:php; toolbar: true; auto-links: false;">// Include the TextMagic PHP lib require('textmagic-sms-api-php/TextMagicAPI.php'); // Set the username and password information $username = 'myusername'; $password = 'mypassword'; // Create a new instance of TM $router = new TextMagicAPI(array( 'username' => $username, 'password' => $password )); // Send a text message to '999-123-4567' $result = $router->send('Wake up!', array(9991234567), true); // result: Result is: Array ( [messages] => Array ( [19896128] => 9991234567 ) [sent_text] => Wake up! [parts_count] => 1 )</pre> <p><span style="font-weight:bold;">2. 根据IP查找地址</span></p> <pre class="brush:php; toolbar: true; auto-links: false;">function detect_city($ip) { $default = 'UNKNOWN'; if (!is_string($ip) || strlen($ip) < 1 || $ip == '127.0.0.1' || $ip == 'localhost') $ip = '8.8.8.8'; $curlopt_useragent = 'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6 (.NET CLR 3.5.30729)'; $url = 'http://ipinfodb.com/ip_locator.php?ip=' . urlencode($ip); $ch = curl_init(); $curl_opt = array( CURLOPT_FOLLOWLOCATION => 1, CURLOPT_HEADER => 0, CURLOPT_RETURNTRANSFER => 1, CURLOPT_USERAGENT => $curlopt_useragent, CURLOPT_URL => $url, CURLOPT_TIMEOUT => 1, CURLOPT_REFERER => 'http://' . $_SERVER['HTTP_HOST'], ); curl_setopt_array($ch, $curl_opt); $content = curl_exec($ch); if (!is_null($curl_info)) { $curl_info = curl_getinfo($ch); } curl_close($ch); if ( preg_match('{<li>City : ([^<]*)</li>}i', $content, $regs) ) { $city = $regs[1]; } if ( preg_match('{<li>State/Province : ([^<]*)</li>}i', $content, $regs) ) { $state = $regs[1]; } if( $city!='' && $state!='' ){ $location = $city . ', ' . $state; return $location; }else{ return $default; } }</pre> <p><span style="font-weight:bold;">3. 显示网页的源代码</span></p> <pre class="brush:php; toolbar: true; auto-links: false;"><?php // display source code $lines = file('http://google.com/'); foreach ($lines as $line_num => $line) { // loop thru each line and prepend line numbers echo "Line #<b>{$line_num}</b> : " . htmlspecialchars($line) . "<br>\n"; }</pre> <p><span style="font-weight:bold;">4. 检查服务器是否使用HTTPS</span></p> <pre class="brush:php; toolbar: true; auto-links: false;">if ($_SERVER['HTTPS'] != "on") { echo "This is not HTTPS"; }else{ echo "This is HTTPS"; }</pre> <p><span style="font-weight:bold;">5. 显示非死book粉丝数量</span></p> <pre class="brush:php; toolbar: true; auto-links: false;">function fb_fan_count($非死book_name){ // Example: https://graph.非死book.com/digimantra $data = json_decode(file_get_contents("https://graph.非死book.com/".$非死book_name)); echo $data->likes; }</pre> <p><span style="font-weight:bold;">6. 检测图片的主要颜色</span></p> <pre class="brush:php; toolbar: true; auto-links: false;">$i = imagecreatefromjpeg("image.jpg"); for ($x=0;$x<imagesx($i);$x++) { for ($y=0;$y<imagesy($i);$y++) { $rgb = imagecolorat($i,$x,$y); $r = ($rgb >> 16) & 0xFF; $g = ($rgb >> & 0xFF; $b = $rgb & 0xFF; $rTotal += $r; $gTotal += $g; $bTotal += $b; $total++; } } $rAverage = round($rTotal/$total); $gAverage = round($gTotal/$total); $bAverage = round($bTotal/$total);</pre> <p><span style="font-weight:bold;">7. 获取内存使用信息</span></p> <pre class="brush:php; toolbar: true; auto-links: false;">echo "Initial: ".memory_get_usage()." bytes \n"; /* prints Initial: 361400 bytes */ // let's use up some memory for ($i = 0; $i < 100000; $i++) { $array []= md5($i); } // let's remove half of the array for ($i = 0; $i < 100000; $i++) { unset($array[$i]); } echo "Final: ".memory_get_usage()." bytes \n"; /* prints Final: 885912 bytes */ echo "Peak: ".memory_get_peak_usage()." bytes \n"; /* prints Peak: 13687072 bytes */</pre> <p><span style="font-weight:bold;">8. 使用 gzcompress() 压缩数据</span></p> <pre class="brush:php; toolbar: true; auto-links: false;">$string = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nunc ut elit id mi ultricies adipiscing. Nulla facilisi. Praesent pulvinar, sapien vel feugiat vestibulum, nulla dui pretium orci, non ultricies elit lacus quis ante. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aliquam pretium ullamcorper urna quis iaculis. Etiam ac massa sed turpis tempor luctus. Curabitur sed nibh eu elit mollis congue. Praesent ipsum diam, consectetur vitae ornare a, aliquam a nunc. In id magna pellentesque tellus posuere adipiscing. Sed non mi metus, at lacinia augue. Sed magna nisi, ornare in mollis in, mollis sed nunc. Etiam at justo in leo congue mollis. Nullam in neque eget metus hendrerit scelerisque eu non enim. Ut malesuada lacus eu nulla bibendum id euismod urna sodales. "; $compressed = gzcompress($string); echo "Original size: ". strlen($string)."\n"; /* prints Original size: 800 */ echo "Compressed size: ". strlen($compressed)."\n"; /* prints Compressed size: 418 */ // getting it back $original = gzuncompress($compressed);</pre> <p><span style="font-weight:bold;">9. 使用PHP做Whois检查</span></p> <pre class="brush:php; toolbar: true; auto-links: false;">function whois_query($domain) { // fix the domain name: $domain = strtolower(trim($domain)); $domain = preg_replace('/^http:\/\//i', '', $domain); $domain = preg_replace('/^www\./i', '', $domain); $domain = explode('/', $domain); $domain = trim($domain[0]); // split the TLD from domain name $_domain = explode('.', $domain); $lst = count($_domain)-1; $ext = $_domain[$lst]; // You find resources and lists // like these on wikipedia: // // http://de.wikipedia.org/wiki/Whois // $servers = array( "biz" => "whois.neulevel.biz", "com" => "whois.internic.net", "us" => "whois.nic.us", "coop" => "whois.nic.coop", "info" => "whois.nic.info", "name" => "whois.nic.name", "net" => "whois.internic.net", "gov" => "whois.nic.gov", "edu" => "whois.internic.net", "mil" => "rs.internic.net", "int" => "whois.iana.org", "ac" => "whois.nic.ac", "ae" => "whois.uaenic.ae", "at" => "whois.ripe.net", "au" => "whois.aunic.net", "be" => "whois.dns.be", "bg" => "whois.ripe.net", "br" => "whois.registro.br", "bz" => "whois.belizenic.bz", "ca" => "whois.cira.ca", "cc" => "whois.nic.cc", "ch" => "whois.nic.ch", "cl" => "whois.nic.cl", "cn" => "whois.cnnic.net.cn", "cz" => "whois.nic.cz", "de" => "whois.nic.de", "fr" => "whois.nic.fr", "hu" => "whois.nic.hu", "ie" => "whois.domainregistry.ie", "il" => "whois.isoc.org.il", "in" => "whois.ncst.ernet.in", "ir" => "whois.nic.ir", "mc" => "whois.ripe.net", "to" => "whois.tonic.to", "tv" => "whois.tv", "ru" => "whois.ripn.net", "org" => "whois.pir.org", "aero" => "whois.information.aero", "nl" => "whois.domain-registry.nl" ); if (!isset($servers[$ext])){ die('Error: No matching nic server found!'); } $nic_server = $servers[$ext]; $output = ''; // connect to whois server: if ($conn = fsockopen ($nic_server, 43)) { fputs($conn, $domain."\r\n"); while(!feof($conn)) { $output .= fgets($conn,128); } fclose($conn); } else { die('Error: Could not connect to ' . $nic_server . '!'); } return $output; }</pre> <p><span style="font-weight:bold;">10. 通过Email发送PHP错误</span></p> <pre class="brush:php; toolbar: true; auto-links: false;"><?php // Our custom error handler function nettuts_error_handler($number, $message, $file, $line, $vars){ $email = " <p>An error ($number) occurred on line <strong>$line</strong> and in the <strong>file: $file.</strong> <p> $message </p>"; $email .= "<pre>" . print_r($vars, 1) . "</pre>"; $headers = 'Content-type: text/html; charset=iso-8859-1' . "\r\n"; // Email the error to someone... error_log($email, 1, 'you@youremail.com', $headers); // Make sure that you decide how to respond to errors (on the user's side) // Either echo an error message, or kill the entire project. Up to you... // The code below ensures that we only "die" if the error was more than // just a NOTICE. if ( ($number !== E_NOTICE) && ($number < 2048) ) { die("There was an error. Please try again later."); } } // We should use our custom function to handle errors. set_error_handler('nettuts_error_handler'); // Trigger an error... (var doesn't exist) echo $somevarthatdoesnotexist;</pre> <p></p> <p> </p>