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直接可以拿来用的PHP惯用功能代码片段(1~5)

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Release: 2016-06-13 12:33:24
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直接可以拿来用的PHP常用功能代码片段(1~5)

文章来源:jquery教程?-?http://www.jq-school.com/Show.aspx?id=322

前面已经分享了100个常用的原生JavaScript代码片段,现在有空就开始收集PHP实用功能代码片段分享给大家用,希望可以帮到jquery学堂群里面的成员和广大对PHP开发的网友们提高开发效率,由于代码比较长,每收集5个常用的代码片段就整理成一篇文章分享出来,以下是第一篇文章。

1、PHP实现即时网站截图

转一个通过PHP实现即时网站截图功能

通过一个表单来提交请求
<form action="screenshot_it.php">
网站地址 (不带 http://):<input name="site" type="text" size="15" value="www."/><br/>
大小: 
<input name="x" type="text" value="800" size="3"/>px<br />
<input name="y" type="text" value="1000" size="3"/>px<br />
图片格式:
<select name="format">
<option value="PNG">PNG</option>
<option value="JPEG">JPEG</option>
</select> 
<input type="submit" name="preview" value="生成截图"/></form>

处理页面..
<?php
$x = $_REQUEST['x'];
$y = $_REQUEST['y'];
$format = $_REQUEST['format'];
$site = $_REQUEST['site'];
$surl = 'http://0907.org/screenshot/screenshot_it.php?site='.$site.'&x='.$x.'&y='.$y.'&format='.$format;
if($_REQUEST['format'] == 'PNG') {
	$ifm = 'png';
} else {
	$ifm = 'jpg';
}
$imt = 'image/'.$ifm;
$ifn = 'screenshot.'.$ifm;
if(isset($_REQUEST['preview'])) {
	$iurl = 'http://域名/子目录/screenshot_it.php?site='.$site.'&x='.$x.'&y='.$y.'&format='.$format; 
	$gwptitle = $_REQUEST['site'].' blog.0907.org';
	include_once("../css.php");   
	//这里可以删除呦!因为是CSS 
	echo '<div class="status4xx">';
	echo '? <b>点击图片下载截图!</div></b><br/><a href="'.$iurl.'"><img  src="'.$iurl.'"    style="max-width:90%"  style="max-width:90%" / alt=" 直接可以拿来用的PHP惯用功能代码片段(1~5) " ></a><br />';
} else {
	header("Content-type: $imt");
	header("Content-Disposition: attachment; filename= $ifn");
	readfile($surl);
}
?>
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2、PHP实现汉字转整型数字,如:一百零一 转成101

test();
/**
 * 测试
 */
function test() {
    echo CnToInt('一'); // 1
    echo CnToInt('十'); // 10
    echo CnToInt('十一'); // 11
    echo CnToInt('一百一十'); // 110
    echo CnToInt('一千零一'); // 1001
    echo CnToInt('一万零一百零一'); // 10101
    echo CnToInt('一亿一千三百万零三千零一'); // 113003001
    echo CnToInt('一千万亿'); // 11.0E+15
}

/**
 * 中文转数字
 * @param String $var 需要解析的中文数
 * @param Int $start 初始值
 * @return int
 */
function CnToInt($var, $start = 0) {
    if (is_numeric($var)) {
        return $var;
    }
    if (intval($var) === 0) {
        $splits = array('亿' => 100000000, '万' => 10000);
        $chars = array('万' => 10000, '千' => 1000, '百' => 100, '十' => 10, '一' => 1, '零' => 0);
        $Ints = array('零' => 0, '一' => 1, '二' => 2, '三' => 3, '四' => 4, '五' => 5, '六' => 6, '七' => 7, '八' => 8, '九' => 9, '十' => 10);
        $var = str_replace('零', "", $var);
        foreach ($splits as $key => $step) {
            if (strpos($var, $key)) {
                $strs = explode($key, $var);
                $start += CnToInt(array_shift($strs)) * $step;
                $var = join('', $strs);
            }
        }
        foreach ($chars as $key => $step) {
            if (strpos($var, $key) !== FALSE) {
                $vs = explode($key, $var);
                if ($vs[0] === "") {
                    $vs[0] = '一';
                }
                $start += $Ints[array_shift($vs)] * $step;
                $var = join('', $vs);
            } elseif (mb_strlen($var, 'utf-8') === 1) {
                $start += $Ints[$var];
                $var = '';
                break;
            }
        }
        return $start;
    } else {
        return intval($var);
    }
}
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3、PHP实现简单的对称加密和解密方法

/**
 * 通用加密
 * @param String $string 需要加密的字串
 * @param String $skey 加密EKY
 * @return String
 */
function enCode($string = '', $skey = 'echounion') {
    $skey = array_reverse(str_split($skey));
    $strArr = str_split(base64_encode($string));
    $strCount = count($strArr);
    foreach ($skey as $key => $value) {
        $key < $strCount && $strArr[$key].=$value;
    }
    return str_replace('=', 'O0O0O', join('', $strArr));
}

/**
 * 通用解密
 * @param String $string 需要解密的字串
 * @param String $skey 解密KEY
 * @return String
 */
function deCode($string = '', $skey = 'echounion') {
    $skey = array_reverse(str_split($skey));
    $strArr = str_split(str_replace('O0O0O', '=', $string), 2);
    $strCount = count($strArr);
    foreach ($skey as $key => $value) {
        $key < $strCount && $strArr[$key] = rtrim($strArr[$key], $value);
    }
    return base64_decode(join('', $strArr));
}
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4、PHP实现数字转字母,生成Excel列标

/**
 * 数字转字母 (类似于Excel列标)
 * @param Int $index 索引值
 * @param Int $start 字母起始值
 * @return String 返回字母
 */
function IntToChr($index, $start = 65) {
	$str = '';
	if (floor($index / 26) > 0) {
		$str .= IntToChr(floor($index / 26)-1);
	}
	return $str . chr($index % 26 + $start);
}

/**
 * 测试
 */
function test() {
	echo IntToChr(0); //# A
	echo IntToChr(1); //# B
	// ...
	echo IntToChr(27); //# AB
}
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5、PHP实现计算两个时间戳之间的时间长度

/**
 * 返回两个时间的相距时间,*年*月*日*时*分*秒
 * @param int $one_time 时间一
 * @param int $two_time 时间二
 * @param int $return_type 默认值为0,0/不为0则拼接返回,1/*秒,2/*分*秒,3/*时*分*秒/,4/*日*时*分*秒,5/*月*日*时*分*秒,6/*年*月*日*时*分*秒
 * @param array $format_array 格式化字符,例,array('年', '月', '日', '时', '分', '秒')
 * @return String or false
 */
public function getRemainderTime($one_time, $two_time, $return_type=0, $format_array=array('年', '月', '日', '时', '分', '秒')){
	if($return_type<0 || $return_type>6){
		return false;
	}
	if(!(is_int($one_time) && is_int($two_time))){
		return false;
	}
	$remainder_seconds = abs($one_time-$two_time);
	//年
	$years = 0;
	if(($return_type==0 || $return_type==6) && $remainder_seconds-31536000>0){
		$years = floor($remainder_seconds/(31536000));
	}
	//月
	$monthes = 0;
	if(($return_type==0 || $return_type>=5) && $remainder_seconds-$years*31536000-2592000>0){
		$monthes = floor(($remainder_seconds-$years*31536000)/(2592000));
	}
	//日
	$days = 0;
	if(($return_type==0 || $return_type>=4) && $remainder_seconds-$years*31536000-$monthes*2592000-86400>0){
		$days = floor(($remainder_seconds-$years*31536000-$monthes*2592000)/(86400));
	}
	//时
	$hours = 0;
	if(($return_type==0 || $return_type>=3) && $remainder_seconds-$years*31536000-$monthes*2592000-$days*86400-3600>0){
		$hours = floor(($remainder_seconds-$years*31536000-$monthes*2592000-$days*86400)/3600);
	}
	//分
	$minutes = 0;
	if(($return_type==0 || $return_type>=2) && $remainder_seconds-$years*31536000-$monthes*2592000-$days*86400-$hours*3600-60>0){
		$minutes = floor(($remainder_seconds-$years*31536000-$monthes*2592000-$days*86400-$hours*3600)/60);
	}
	//秒
	$seconds = $remainder_seconds-$years*31536000-$monthes*2592000-$days*86400-$hours*3600-$minutes*60;
	$return = false;
	switch ($return_type){
		case 0:
			if($years>0){
				$return = $years.$format_array[0].$monthes.$format_array[1].$days.$format_array[2].$hours.$format_array[3].$minutes.$format_array[4].$seconds.$format_array[5];
			}else if($monthes>0){
				$return = $monthes.$format_array[1].$days.$format_array[2].$hours.$format_array[3].$minutes.$format_array[4].$seconds.$format_array[5];
			}else if($days>0){
				$return = $days.$format_array[2].$hours.$format_array[3].$minutes.$format_array[4].$seconds.$format_array[5];
			}else if($hours>0){
				$return = $hours.$format_array[3].$minutes.$format_array[4].$seconds.$format_array[5];
			}else if($minutes>0){
				$return = $minutes.$format_array[4].$seconds.$format_array[5];
			}else{
				$return = $seconds.$format_array[5];
			}
			break;            
		case 1:
			$return = $seconds.$format_array[5];
			break;
		case 2:
			$return = $minutes.$format_array[4].$seconds.$format_array[5];
			break;
		case 3:
			$return = $hours.$format_array[3].$minutes.$format_array[4].$seconds.$format_array[5];
			break;
		case 4:
			$return = $days.$format_array[2].$hours.$format_array[3].$minutes.$format_array[4].$seconds.$format_array[5];
			break;
		case 5:
			$return = $monthes.$format_array[1].$days.$format_array[2].$hours.$format_array[3].$minutes.$format_array[4].$seconds.$format_array[5];
			break;
		case 6:
			$return = $years.$format_array[0].$monthes.$format_array[1].$days.$format_array[2].$hours.$format_array[3].$minutes.$format_array[4].$seconds.$format_array[5];
			break;
		default:
			$return = false;                
	}
	return $return;
}
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