分析web項目開發常用代碼片段

今天給大家分享一些我用過的web開發代碼片段，希望與開發者們互相學習交流
計算執行時間
//Create a variable for start time  
$time_start = microtime(true);  
// Place your PHP/HTML/JavaScript/CSS/Etc. Here  
//Create a variable for end time  
$time_end = microtime(true);  
//Subtract the two times to get seconds  
$time = $time_end - $time_start;  
echo 'Script took '.$time.' seconds to execute'; 

關鍵詞高亮
function highlight($sString, $aWords) {  
    if (!is_array ($aWords) || emptyempty ($aWords) || !is_string ($sString)) {  
        return false;  
    }  
 
    $sWords = implode ('|', $aWords);  
    return preg_replace ('@\b('.$sWords.')\b@si', '<strong style="background-color:yellow">$1</strong>', $sString);  
} 

壓縮多個CSS文件
header('Content-type: text/css');  
ob_start("compress");  
function compress($buffer) {  
  /* remove comments */ 
  $buffer = preg_replace('!/\*[^*]*\*+([^/][^*]*\*+)*/!', '', $buffer);  
  /* remove tabs, spaces, newlines, etc. */ 
  $buffer = str_replace(array("\r\n", "\r", "\n", "\t", '  ', '    ', '    '), '', $buffer);  
  return $buffer;  
}  
 
/* your css files */ 
include('master.css');  
include('typography.css');  
include('grid.css');  
include('print.css');  
include('handheld.css');  
ob_end_flush();

代碼片段就到這里，應用要靈活，重要的是參考開發思路，在實際的項目開發過程中還是要具體問題具體分析。