Heim >Backend-Entwicklung >PHP-Tutorial >直接拿来用 九个超实用的PHP代码片段(二),_PHP教程
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,笔者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。>>>
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。
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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 . "\r\n" );
while (! feof ( $conn )) {
$output .= fgets ( $conn ,128);
}
fclose( $conn );
}
else { die ( 'Error: Could not connect to ' . $nic_server . '!' ); }
return $output ;
}
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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。
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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 = $router ->send( 'Wake up!' , array (9991234567), true);
// result: Result is: Array ( [messages] => Array ( [19896128] => 9991234567 ) [sent_text] => Wake up! [parts_count] => 1 )
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这段代码帮助你获取内存使用率。
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echo "Initial: " .memory_get_usage(). " bytes \n" ;
/* prints
Initial: 361400 bytes
*/
// let's use up some memory
for ( <code class="php variable">$i = 0; <code class="php variable">$i <code class="php variable">$i ++) {
$array []= md5( <code class="php variable">$i);
}
// let's remove half of the array
for ( <code class="php variable">$i = 0; <code class="php variable">$i <code class="php variable">$i ++) {
unset( $array [ <code class="php variable">$i]);
}
echo "Final: " .memory_get_usage(). " bytes \n" ;
/* prints
Final: 885912 bytes
*/
echo "Peak: " .memory_get_peak_usage(). " bytes \n" ;
/* prints
Peak: 13687072 bytes
*/
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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。
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<?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";
}
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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。
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function data_uri( $file , $mime ) {
$contents = file_get_contents ( $file );
$base64 = base64_encode ( $contents );
echo "data:$mime;base64,$base64" ;
}
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这段代码帮助你查找特定的IP,只需在功能参数上输入IP,就可检测出位置。
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function detect_city( <code class="php variable">$ip) {
$default = 'UNKNOWN' ;
if (! is_string ( <code class="php variable">$ip) || strlen ( <code class="php variable">$ip) <code class="php variable">$ip == '127.0.0.1' || <code class="php variable">$ip == 'localhost' ) <code class="php variable">$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)' ; $url = 'http://ipinfodb.com/ip_locator.php?ip=' . urlencode( <code class="php variable">$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 : ([^
<code class="php plain">}i’, $content , $regs ) ) { $city = $regs [1]; } if ( preg_match(‘{
State/Province : ([^
<code class="php spaces">
}i’, $content , $regs ) ) { $state = $regs [1]; } if ( $city !=” && $state !=” ){ $location = $city . ‘, ‘ . $state ; return $location ; } else { return $default ; } }
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检测浏览器使用的代码脚本语言。
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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 ;
}
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if ( $_SERVER [ 'HTTPS' ] != "on" ) {
echo "This is not HTTPS" ;
} else {
echo "This is HTTPS" ;
}
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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 ;
}
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英文出自:Designzum