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一些常用的php脚本函数代码

关键词高亮

function highlight($sString, $aWords) {
if (!is_array ($aWords) || empty ($aWords) || !is_string ($sString)) {
return false;
}
$sWords = implode (‘|’, $aWords);
return preg_replace (‘@\b(‘.$sWords.’)\b@si’, ‘<strong style=”background-color:yellow”>$1</strong>’, $sString);
}

自动生成密码

function generatePassword($length=9, $strength=0) {
$vowels = ‘aeuy’;
$consonants = ‘bdghjmnpqrstvz’;
if ($strength >= 1) {
$consonants .= ‘BDGHJLMNPQRSTVWXZ’;
}
if ($strength >= 2) {
$vowels .= “AEUY”;
}
if ($strength >= 4) {
$consonants .= ‘23456789’;
}
if ($strength >= 8 ) {
$vowels .= ‘;
}

$password = ”;
$alt = time() % 2;
for ($i = 0; $i < $length; $i++) {
if ($alt == 1) {
$password .= $consonants[(rand() %
strlen($consonants))];
$alt = 0;
} else {
$password .= $vowels[(rand() %
strlen($vowels))];
$alt = 1;
}
}
return $password;
}

压缩多个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();

获取短网址

function getTinyUrl($url) {
return file_get_contents(“http://tinyurl.com/api-create.php?url=”.$url);
}

计算执行时间

//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’;

PHP的维护模式

function maintenance($mode = FALSE){
if($mode){
if(basename($_SERVER[‘SCRIPT_FILENAME’]) != ‘maintenance.php’){
header(“Location: http://example.com/maintenance.php“);
exit;
}
}else{
if(basename($_SERVER[‘SCRIPT_FILENAME’]) == ‘maintenance.php’){
header(“Location: http://example.com/“);
exit;
}
}
}

阻止CSS样式被缓存

<link href=”/stylesheet.css?<?php echo time(); ?>” rel=”stylesheet” type=”text/css” />

分类:Other
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