10 life-saving PHP code snippets that are essential for web developers_PHP Tutorial

[Code] Keyword Highlighting

1. <span><span class="keyword">function</span><span> highlight(</span><span class="vars">$sString</span><span>, </span><span class="vars">$aWords</span><span>) {  </span></span>

2.  if (!is_array ($aWords) || emptyempty ($aWords) || !is_string ($sString)) {
3.  return false;
4. }
6.  $sWords = implode ('|', $aWords );
7.  return preg_replace ('@b('.$sWords .')b@si', '$1', $sString );
8. }

[Code] Get your Feedburner user

1. <span><span class="keyword">function</span><span> get_average_readers(</span><span class="vars">$feed_id</span><span>,</span><span class="vars">$interval</span><span> = 7){  </span></span>

2.     $today = date('Y-m-d', strtotime("now"));  
3.     $ago = date('Y-m-d', strtotime("-".$interval." days"));  
4.     $feed_url="https://feedburner.google.com/api/awareness/1.0/GetFeedData?uri=".$feed_id."&dates=".$ago.",".$today;  
5.     $ch = curl_init();  
6.     curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);  
7.     curl_setopt($ch, CURLOPT_URL, $feed_url);  
8.     $data = curl_exec($ch);  
9.     curl_close($ch);  
10.     $xml = new SimpleXMLElement($data);  
11.     $fb = $xml->feed->entry['circulation'];  
12.  
13.     $nb = 0;  
14.     foreach($xml->feed->children() as $circ){  
15.         $nb += $circ['circulation'];  
16.     }  
17.  
18.     return round($nb/$interval);  
19. } 

[代码] 自动生成密码

1. <span><span class="keyword">function</span><span> generatePassword(</span><span class="vars">$length</span><span>=9, </span><span class="vars">$strength</span><span>=0) {  </span></span>

2.     $vowels = 'aeuy';  
3.     $consonants = 'bdghjmnpqrstvz';  
4.     if ($strength >= 1) {  
5.         $consonants .= 'BDGHJLMNPQRSTVWXZ';  
6.     }  
7.     if ($strength >= 2) {  
8.         $vowels .= "AEUY";  
9.     }  
10.     if ($strength >= 4) {  
11.         $consonants .= '23456789';  
12.     }  
13.     if ($strength >= 8 ) {  
14.         $vowels .= '@#$%';  
15.     }  
16.  
17.     $password = '';  
18.     $alt = time() % 2;  
19.     for ($i = 0; $i < $length; $i++) {
20. if ($alt == 1) {
21. $password .= $consonants[(rand() % strlen($consonants))];
22. $alt = 0;
23. } else {
24. $password .= $vowels[(rand() % strlen($vowels))];
25. $alt = 1;
26. }
27. }
28. return $password;
29. }

[代码] 压缩多个CSS文件

1. <span><span>header(</span><span class="string">&#39;Content-type: text/css&#39;</span><span>);  </span></span>

2. ob_start("compress");
3. function compress($buffer) {
4. /* remove comments */
5. $buffer = preg_replace('!/*[^*]**+([^/][^*]**+)*/!', '', $buffer);
6. /* remove tabs, spaces, newlines, etc. */
7. $buffer = str_replace(array("rn", "r", "n", "t", ' ', ' ', ' '), '', $buffer);
8. return $buffer;
9. }
11. /* your css files */
12. include('master.css');
13. include('typography.css');
14. include('grid.css');
15. include('print.css');
16. include('handheld.css');
18. ob_end_flush();

[代码] 获取短网址

1. <span><span class="keyword">function</span><span> getTinyUrl(</span><span class="vars">$url</span><span>) {  </span></span>

2. return file_get_contents("http://tinyurl.com/api-create.php?url=".$url);
3. }

[代码] 根据生日计算年龄

1. <span><span class="keyword">function</span><span> age(</span><span class="vars">$date</span><span>){  </span></span>

2. $year_diff = '';
3. $time = strtotime($date);
4. if(FALSE === $time){
5. return '';
6. }
8. $date = date('Y-m-d', $time);
9. list($year,$month,$day) = explode("-",$date);
10. $year_diff = date("Y") – $year;
11. $month_diff = date("m") – $month;
12. $day_diff = date("d") – $day;
13. if ($day_diff < 0 || $month_diff < 0) $year_diff–;
15. return $year_diff;
16. }

[代码] 计算执行时间

1. <span><span class="comment">//Create a variable for start time </span><span> </span></span>

2. $time_start = microtime(true);
4. // Place your PHP/HTML/JavaScript/CSS/Etc. Here
6. //Create a variable for end time
7. $time_end = microtime(true);
8. //Subtract the two times to get seconds
9. $time = $time_end - $time_start;
11. echo 'Script took '.$time.' seconds to execute';

[代码] PHP的维护模式

1. <span><span class="keyword">function</span><span> maintenance(</span><span class="vars">$mode</span><span> = FALSE){  </span></span>

2. if($mode){
3. if(basename($_SERVER['SCRIPT_FILENAME']) != 'maintenance.php'){
4. header("Location: http://example.com/maintenance.php");
5. exit;
6. }
7. }else{
8. if(basename($_SERVER['SCRIPT_FILENAME']) == 'maintenance.php'){
9. header("Location: http://example.com/");
10. exit;
11. }
12. }
13. }

[代码] 阻止CSS样式被缓存

1. <span><span><link href=< span=""><span class="string">"/stylesheet.css?<!--?php echo time(); ?-->"</span><span> rel=</span><span class="string">"stylesheet"</span><span> type=</span><span class="string">"text/css"</span><span> /&glt; </span></link href=<></span></span>

[代码] 为数字增加 stndrd 等

1. <span><span class="keyword">function</span><span> make_ranked(</span><span class="vars">$rank</span><span>) {  </span></span>

2. $last = substr( $rank, -1 );
3. $seclast = substr( $rank, -2, -1 );
4. if( $last > 3 || $last == 0 ) $ext = 'th';  
5.     else if( $last == 3 ) $ext = 'rd';  
6.     else if( $last == 2 ) $ext = 'nd';  
7.     else $ext = 'st';   
8.  
9.     if( $last == 1 && $seclast == 1) $ext = 'th';  
10.     if( $last == 2 && $seclast == 1) $ext = 'th';  
11.     if( $last == 3 && $seclast == 1) $ext = 'th';   
12.  
13.     return $rank.$ext;  
14. } 

 

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http://www.bkjia.com/PHPjc/445722.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/445722.htmlTechArticle[代码] 关键词高亮 function highlight( $sString , $aWords ){ if (! is_array ( $aWords )|| empty empty ( $aWords )||! is_string ( $sString )){ return false; } $sWords =implode...