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">'Content-type: text/css'</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. }  
10.  
11. /* your css files */ 
12. include('master.css');  
13. include('typography.css');  
14. include('grid.css');  
15. include('print.css');  
16. include('handheld.css');  
17.  
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.     }  
7.  
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 $month_diff $year_diff–;  
14.  
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);  
3.  
4. // Place your PHP/HTML/JavaScript/CSS/Etc. Here  
5.  
6. //Create a variable for end time  
7. $time_end = microtime(true);  
8. //Subtract the two times to get seconds  
9. $time = $time_end - $time_start;  
10.  
11. echo 'Script took '.$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 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> 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...