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标题 19个超实用的PHP代码片段
内容
    每位程序员和开发者都喜欢讨论他们最爱的代码片段，尤其是当PHP开发者花费数个小时为网页编码或创建应用时，他们更知道这些代码的重要性。为了节约编码时间，小编收集了一些较为实用的代码片段，帮助开发者提高工作效率
    1) Whois query using PHP ——利用PHP获取Whois请求
    利用这段代码，在特定的域名里可获得whois信息。把域名名称作为参数，并显示所有域名的相关信息。
    代码如下:
    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:
    //
    // <a href="http://de.wikipedia.org/wiki/Whois">http://de.wikipedia.org/wiki/Whois</a>
    //
    $servers = array(
    "biz" => "whois.neulevel.biz",
    "com" => "whois.internic.net",
    "us" => "whois.nic.us",
    "coop" => "whois.nic.coop",
    "info" => "whois.nic.info",
    "name" => "whois.nic.name",
    "net" => "whois.internic.net",
    "gov" => "whois.nic.gov",
    "edu" => "whois.internic.net",
    "mil" => "rs.internic.net",
    "int" => "whois.iana.org",
    "ac" => "whois.nic.ac",
    "ae" => "whois.uaenic.ae",
    "at" => "whois.ripe.net",
    "au" => "whois.aunic.net",
    "be" => "whois.dns.be",
    "bg" => "whois.ripe.net",
    "br" => "whois.registro.br",
    "bz" => "whois.belizenic.bz",
    "ca" => "whois.cira.ca",
    "cc" => "whois.nic.cc",
    "ch" => "whois.nic.ch",
    "cl" => "whois.nic.cl",
    "cn" => "whois.cnnic.net.cn",
    "cz" => "whois.nic.cz",
    "de" => "whois.nic.de",
    "fr" => "whois.nic.fr",
    "hu" => "whois.nic.hu",
    "ie" => "whois.domainregistry.ie",
    "il" => "whois.isoc.org.il",
    "in" => "whois.ncst.ernet.in",
    "ir" => "whois.nic.ir",
    "mc" => "whois.ripe.net",
    "to" => "whois.tonic.to",
    "tv" => "whois.tv",
    "ru" => "whois.ripn.net",
    "org" => "whois.pir.org",
    "aero" => "whois.information.aero",
    "nl" => "whois.domain-registry.nl"
    );
    if (!isset($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, $domain."rn");
    while(!feof($conn)) {
    $output .= fgets($conn,128);
    }
    fclose($conn);
    }
    else { die('Error: Could not connect to ' . $nic_server . '!'); }
    return $output;
    }
    2) Text messaging with PHP using the TextMagic API ——使用TextMagic API 获取PHP Test信息
    TextMagic引入强大的核心API，可轻松将SMS发送到手机。该API是需要付费。
    代码如下:
    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 = $router->send('Wake up!', array(9991234567), true);
    // result: Result is: Array ( [messages] => Array ( [19896128] => 9991234567 ) [sent_text] => Wake up! [parts_count] => 1 )
    3) Get info about your memory usage——获取内存使用率
    这段代码帮助你获取内存使用率。
    代码如下:
    echo "Initial: ".memory_get_usage()." bytes n";
    /* prints
    Initial: 361400 bytes
    */
    // let's use up some memory
    for ($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
    */
    4) Display source code of any webpage——查看任意网页源代码
    如果你想查看网页源代码，那么只需更改第二行的URL，源代码就会在网页上显示出。
    代码如下:
    <?php // display source code $lines = file('http://google.com/'); foreach ($lines as $line_num => $line) {
    // loop thru each line and prepend line numbers
    echo "Line #{$line_num} : " . htmlspecialchars($line) . "
    n";
    }
    5) Create data uri's——创建数据uri
    通过使用此代码，你可以创建数据Uri，这对在HTML/CSS中嵌入图片非常有用，可帮助节省HTTP请求。
    代码如下:
    function data_uri($file, $mime) {
    $contents=file_get_contents($file);
    $base64=base64_encode($contents);
    echo "data:$mime;base64,$base64";
    }
    6) Detect location by IP——通过IP检索出地理位置
    这段代码帮助你查找特定的IP，只需在功能参数上输入IP，就可检测出位置。
    代码如下:
    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('{
    City : ([^<]*)
    }i', $content, $regs) ) { $city = $regs[1]; } if ( preg_match(‘{
    State/Province : ([^<]*)
    }i', $content, $regs) ) { $state = $regs[1]; } if( $city!=” && $state!=” ){ $location = $city . ‘, ‘ . $state; return $location; }else{ return $default; } }
    7) Detect browser language——查看浏览器语言
    检测浏览器使用的代码脚本语言。
    代码如下:
    function get_client_language($availableLanguages, $default='en'){
    if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
    $langs=explode(',',$_SERVER['HTTP_ACCEPT_LANGUAGE']);
    foreach ($langs as $value){
    $choice=substr($value,0,2);
    if(in_array($choice, $availableLanguages)){
    return $choice;
    }
    }
    }
    return $default;
    }
    8) Check if server is HTTPS——检测服务器是否是HTTPS
    代码如下:
    if ($_SERVER['HTTPS'] != "on") {
    echo "This is not HTTPS";
    }else{
    echo "This is HTTPS";
    }
    9) Generate CSV file from a PHP array——在PHP数组中生成.csv 文件
    代码如下:
    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 $contents;
    }
    10.查找Longitudes与Latitudes之间的距离
    代码如下:
    function getDistanceBetweenPointsNew($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');
    }
    $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).'
    ';
    }
    The example returns the following:
    代码如下:
    miles: 2.6025
    feet: 13,741.4350
    yards: 4,580.4783
    kilometers: 4.1884
    meters: 4,188.3894
    11.完善cURL功能
    代码如下:
    function xcurl($url,$ref=null,$post=array(),$ua="Mozilla/5.0 (X11; Linux x86_64; rv:2.2a1pre) Gecko/20110324 Firefox/4.2a1pre",$print=false) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_AUTOREFERER, true);
    if(!empty($ref)) {
    curl_setopt($ch, CURLOPT_REFERER, $ref);
    }
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_HEADER, 0);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
    if(!empty($ua)) {
    curl_setopt($ch, CURLOPT_USERAGENT, $ua);
    }
    if(count($post) > 0){
    curl_setopt($ch, CURLOPT_POST, 1);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $post);
    }
    $output = curl_exec($ch);
    curl_close($ch);
    if($print) {
    print($output);
    } else {
    return $output;
    }
    }
    12.清理用户输入
    代码如下:
    <?php
    function cleanInput($input) {
    $search = array(
    ]*?>.*?@si'">'@<script[^>]*?>.*?</script>@si', // Strip out javascript
    ]*?>@si'">'@<[/!]*?[^<>]*?>@si', // Strip out HTML tags
    ]*?>.*?@siU'">'@<style[^>]*?>.*?</style>@siU', // Strip style tags properly
    '@<![sS]*?--[ tnr]*>@' // Strip multi-line comments
    );
    $output = preg_replace($search, '', $input);
    return $output;
    }
    ?>
    <?php
    function sanitize($input) {
    if (is_array($input)) {
    foreach($input as $var=>$val) {
    $output[$var] = sanitize($val);
    }
    }
    else {
    if (get_magic_quotes_gpc()) {
    $input = stripslashes($input);
    }
    $input = cleanInput($input);
    $output = mysql_real_escape_string($input);
    }
    return $output;
    }
    ?>
    13.通过IP（城市、国家）检测地理位置
    代码如下:
    function detect_city($ip) {
    $default = 'Hollywood, CA';
    if (!is_string($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('{
    City : ([^<]*)
    }i', $content, $regs) ) { $city = $regs[1]; } if ( preg_match('{
    State/Province : ([^<]*)
    }i', $content, $regs) ) { $state = $regs[1]; } if( $city!='' && $state!='' ){ $location = $city . ', ' . $state; return $location; }else{ return $default; } }
    14.设置密码强度
    代码如下:
    function password_strength($string){
    $h = 0;
    $size = strlen($string);
    foreach(count_chars($string, 1) as $v){
    $p = $v / $size;
    $h -= $p * log($p) / log(2);
    }
    $strength = ($h / 4) * 100;
    if($strength > 100){
    $strength = 100;
    }
    return $strength;
    }
    var_dump(password_strength("Correct Horse Battery Staple"));
    echo "<br>";
    var_dump(password_strength("Super Monkey Ball"));
    echo "<br>";
    var_dump(password_strength("Tr0ub4dor&3"));
    echo "<br>";
    var_dump(password_strength("abc123"));
    echo "<br>";
    var_dump(password_strength("sweet"));
    15.检测浏览器语言，只提供可用的$availableLanguages作为数组(‘en', ‘de', ‘es')
    代码如下:
    function get_client_language($availableLanguages, $default='en'){
    if (isset($_SERVER['HTTP_ACCEPT_LANGUAGE'])) {
    $langs=explode(',',$_SERVER['HTTP_ACCEPT_LANGUAGE']);
    //start going through each one
    foreach ($langs as $value){
    $choice=substr($value,0,2);
    if(in_array($choice, $availableLanguages)){
    return $choice;
    }
    }
    }
    return $default;
    }
    16.创建数据URL
    代码如下:
    function data_uri($file, $mime) {
    $contents=file_get_contents($file);
    $base64=base64_encode($contents);
    echo "data:$mime;base64,$base64";
    }
    17.创建更加友好的页面标题SEO URL
    输入示例：$title = “This foo's bar is rockin' cool!”; echo makeseoname($title); //RETURNS: //this-foos-bar-is-rockin-cool
    代码如下:
    function make_seo_name($title) {
    return preg_replace('/[^a-z0-9_-]/i', '', strtolower(str_replace(' ', '-', trim($title))));
    }
    18.终极加密功能
    代码如下:
    // f(ucking) u(ncrackable) e(ncryption) function by BlackHatDBL (www.netforme.net)
    function fue($hash,$times) {
    // Execute the encryption(s) as many times as the user wants
    for($i=$times;$i>0;$i--) {
    // Encode with base64...
    $hash=base64_encode($hash);
    // and md5...
    $hash=md5($hash);
    // sha1...
    $hash=sha1($hash);
    // sha256... (one more)
    $hash=hash("sha256", $hash);
    // sha512
    $hash=hash("sha512", $hash);
    }
    // Finaly, when done, return the value
    return $hash;
    }
    19a.Tweeter Feed Runner——使用任意twitter名，可在任意页面上加载用户资源。
    代码如下:
    public function loadTimeline($user, $max = 20){
    $this->twitURL .= 'statuses/user_timeline.xml?screen_name='.$user.'&count='.$max;
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $this->twitURL);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    $this->xml = curl_exec($ch);
    return $this;
    }
    public function getTweets(){
    $this->twitterArr = $this->getTimelineArray();
    $tweets = array();
    foreach($this->twitterArr->status as $status){
    $tweets[$status->created_at->__toString()] = $status->text->__toString();
    }
    return $tweets;
    }
    public function getTimelineArray(){
    return simplexml_load_string($this->xml);
    }
    public function formatTweet($tweet){
    $tweet = preg_replace("/(http(.+?))( |$)/","$1$3", $tweet);
    $tweet = preg_replace("/#(.+?)(h|W|$)/", "#$1$2", $tweet);
    $tweet = preg_replace("/@(.+?)(h|W|$)/", "@$1$2", $tweet);
    return $tweet;
    }
    19b. Tweeter Feed Runner——用于在主题中创建文件，比如：example.php
    代码如下:
    loadTimeline("phpsnips")->getTweets();
    foreach($feed as $time => $message){
    echo "<div class='tweet'>".$twitter->formatTweet($message)."<br />At: ".$time."</div>";
    }
随便看

　

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更新时间：2025/5/21 16:23:37