Web开发 – 第4页

2月 12, 2023

php如何屏蔽错误警告提示信息

作者 5xue 在 php开发

方法一：
在有可能出错的函数前加@，然后or die("")，如：
@mysql_connect(…) or die("Database Connect Error")

方法二：
编辑php.ini ，查找“display_errors”，将“=”后面的值改为“off”。

方法三：
在php脚本前加error_reporting(0)，屏蔽所有错误提示。

其中，error_reporting 配置错误信息回报的等级。

2月 11, 2023

js实现圆形进度条

作者 5xue 在 Javascript

js实现圆形进度条，源代码：

<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>js实现圆形进度条</title>
<style>
.container {
	width: 300px;
	height: 300px;
	margin: 100px auto;
	/* border: 1px solid #000; */
}
.circle-progressbar {
	position: relative;
	width: 100%;
	height: 100%;
}
.circle-progressbar .title {
	margin: 0;
	text-align: center;
	line-height: 300px;
}
.circle-progressbar div {
	box-sizing: border-box;
}
.circle-progressbar .wrapper {
	position: absolute;
	top: 0;
	width: 150px;
	height: 300px;
	/* border: 1px solid red; */
	overflow: hidden;
}
.circle-progressbar .wrapper.left-wrapper {
	left: 0;
}
.circle-progressbar .wrapper.right-wrapper {
	right: 0;
}
.circle-progressbar .wrapper .circle-bar {
	position: absolute;
	width: 300px;
	height: 300px;
	border: 30px solid transparent;
	border-radius: 50%;
	transform: rotate(-135deg);
	transition: transform .3s;
}
.circle-progressbar .left-wrapper .circle-bar {
	left: 0;
	border-left-color: turquoise;
	border-bottom-color: turquoise;
}
.circle-progressbar .right-wrapper .circle-bar {
	right: 0;
	border-right-color: turquoise;
	border-top-color: turquoise;
}
</style>
</head>
<body>
<div class="container">
	<div class="circle-progressbar">
		<h1 class="title">0%</h1>
		<div class="wrapper left-wrapper">
			<div class="circle-bar"></div>
		</div>
		<div class="wrapper right-wrapper">
			<div class="circle-bar"></div>
		</div>
	</div>
</div>
<script>
const circleProgressBar = CircleProgressBar();
let p = 0;
let t = setInterval(() => {circleProgressBar( ++ p)}, 200);

function CircleProgressBar() {
	const oLeftCircleBar = getCircleBar('left'),
		oRightCircleBar = getCircleBar('right'),
		oTitle = document.querySelector('.circle-progressbar .title');

	return function(percent) {
		if(percent >= 0 && percent <= 50) {
			setRotate(oRightCircleBar, percent)
		}else if(percent >= 50 && percent <= 100) {
			setRotate(oLeftCircleBar, percent - 50)
		}
		if(percent >= 0 && percent <= 100) {
			oTitle.innerText = percent + '%';
		}
		if(percent == 100) {
			t=window.clearInterval(t);
		}
	}

	function formatDegree(percent) {
		return `rotate(${ -135 + (360 / 100 * percent) }deg)`
	}

	function setRotate(node, percent) {
		node.style.transform = formatDegree(percent)
	}

	function getCircleBar(dir) {
		return document.querySelector(`.circle-progressbar .${ dir }-wrapper .circle-bar`);
	}
}
</script>
</body>
</html>

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<!DOCTYPE html>

<html>

<head>

<title>js实现圆形进度条</title>

<style>

.container {

width: 300px;

height: 300px;

margin: 100px auto;

/* border: 1px solid #000; */

}

.circle-progressbar {

position: relative;

width: 100%;

height: 100%;

}

.circle-progressbar .title {

margin: 0;

text-align: center;

line-height: 300px;

}

.circle-progressbar div {

box-sizing: border-box;

}

.circle-progressbar .wrapper {

position: absolute;

top: 0;

width: 150px;

height: 300px;

/* border: 1px solid red; */

overflow: hidden;

}

.circle-progressbar .wrapper.left-wrapper {

left: 0;

}

.circle-progressbar .wrapper.right-wrapper {

right: 0;

}

.circle-progressbar .wrapper .circle-bar {

position: absolute;

width: 300px;

height: 300px;

border: 30px solid transparent;

border-radius: 50%;

transform: rotate(-135deg);

transition: transform .3s;

}

.circle-progressbar .left-wrapper .circle-bar {

left: 0;

border-left-color: turquoise;

border-bottom-color: turquoise;

}

.circle-progressbar .right-wrapper .circle-bar {

right: 0;

border-right-color: turquoise;

border-top-color: turquoise;

}

</style>

</head>

<body>

</div>

</div>

const circleProgressBar = CircleProgressBar();

let p = 0;

let t = setInterval(() => {circleProgressBar( ++ p)}, 200);

function CircleProgressBar() {

const oLeftCircleBar = getCircleBar('left'),

oRightCircleBar = getCircleBar('right'),

oTitle = document.querySelector('.circle-progressbar .title');

return function(percent) {

if(percent >= 0 && percent <= 50) {

setRotate(oRightCircleBar, percent)

}else if(percent >= 50 && percent <= 100) {

setRotate(oLeftCircleBar, percent - 50)

}

if(percent >= 0 && percent <= 100) {

oTitle.innerText = percent + '%';

}

if(percent == 100) {

t=window.clearInterval(t);

}

function formatDegree(percent) {

return `rotate(${ -135 + (360 / 100 * percent) }deg)`

}

function setRotate(node, percent) {

node.style.transform = formatDegree(percent)

}

function getCircleBar(dir) {

return document.querySelector(`.circle-progressbar .${ dir }-wrapper .circle-bar`);

}

</script>

</body>

</html>

浏览样例

2月 11, 2023

纯css实现圆形进度条动画

作者 5xue 在 Html与Css

纯css实现圆形进度条动画，源代码：

<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>纯css圆形进度条动画</title>
<style>
.circleProgress_wrapper{
	width: 200px;
	height: 200px;
	margin: 50px auto;
	position: relative;
	border:0px solid #ddd;
}
.wrapper{
	width: 100px;
	height: 200px;
	position: absolute;
	top:0;
	overflow: hidden;
}
.right{
	right:0;
}
.left{
	left:0;
}
.circleProgress{
	width: 160px;
	height: 160px;
	border:20px solid rgb(232, 232, 12);
	border-radius: 50%;
	position: absolute;
	top:0;
	-webkit-transform: rotate(45deg);
}
.rightcircle{
	border-top:20px solid green;
	border-right:20px solid green;
	right:0;
	-webkit-animation: circleProgressLoad_right 5s linear infinite;
}
.leftcircle{
	border-bottom:20px solid green;
	border-left:20px solid green;
	left:0;
	-webkit-animation: circleProgressLoad_left 5s linear infinite;
}
@-webkit-keyframes circleProgressLoad_right{
	0%{
		border-top:20px solid #ED1A1A;
		border-right:20px solid #ED1A1A;
		-webkit-transform: rotate(45deg);
	}
	50%{
		border-top:20px solid rgb(232, 232, 12);
		border-right:20px solid rgb(232, 232, 12);
		border-left:20px solid rgb(81, 197, 81);
		border-bottom:20px solid rgb(81, 197, 81);
		-webkit-transform: rotate(225deg);
	}
	100%{
		border-left:20px solid green;
		border-bottom:20px solid green;
		-webkit-transform: rotate(225deg);
	}
}
@-webkit-keyframes circleProgressLoad_left{
	0%{
		border-bottom:20px solid #ED1A1A;
		border-left:20px solid #ED1A1A;
		-webkit-transform: rotate(45deg);
	}
	50%{
		border-bottom:20px solid rgb(232, 232, 12);
		border-left:20px solid rgb(232, 232, 12);
		border-top:20px solid rgb(81, 197, 81);
		border-right:20px solid rgb(81, 197, 81);
		-webkit-transform: rotate(45deg);
	}
	100%{
		border-top:20px solid green;
		border-right:20px solid green;
		border-bottom:20px solid green;
		border-left:20px solid green;
		-webkit-transform: rotate(225deg);
	}
}
</style>
</head>
<body>
<div class="circleProgress_wrapper">
	<div class="wrapper right">
		<div class="circleProgress rightcircle"></div>
	</div>
	<div class="wrapper left">
		<div class="circleProgress leftcircle"></div>
	</div>
</div>
</body>
</html>

100

<!DOCTYPE html>

<html>

<head>

<title>纯css圆形进度条动画</title>

<style>

.circleProgress_wrapper{

width: 200px;

height: 200px;

margin: 50px auto;

position: relative;

border:0px solid #ddd;

}

.wrapper{

width: 100px;

height: 200px;

position: absolute;

top:0;

overflow: hidden;

}

.right{

right:0;

}

.left{

left:0;

}

.circleProgress{

width: 160px;

height: 160px;

border:20px solid rgb(232, 232, 12);

border-radius: 50%;

position: absolute;

top:0;

-webkit-transform: rotate(45deg);

}

.rightcircle{

border-top:20px solid green;

border-right:20px solid green;

right:0;

-webkit-animation: circleProgressLoad_right 5s linear infinite;

}

.leftcircle{

border-bottom:20px solid green;

border-left:20px solid green;

left:0;

-webkit-animation: circleProgressLoad_left 5s linear infinite;

}

@-webkit-keyframes circleProgressLoad_right{

0%{

border-top:20px solid #ED1A1A;

border-right:20px solid #ED1A1A;

-webkit-transform: rotate(45deg);

}

50%{

border-top:20px solid rgb(232, 232, 12);

border-right:20px solid rgb(232, 232, 12);

border-left:20px solid rgb(81, 197, 81);

border-bottom:20px solid rgb(81, 197, 81);

-webkit-transform: rotate(225deg);

}

100%{

border-left:20px solid green;

border-bottom:20px solid green;

-webkit-transform: rotate(225deg);

}

@-webkit-keyframes circleProgressLoad_left{

0%{

border-bottom:20px solid #ED1A1A;

border-left:20px solid #ED1A1A;

-webkit-transform: rotate(45deg);

}

50%{

border-bottom:20px solid rgb(232, 232, 12);

border-left:20px solid rgb(232, 232, 12);

border-top:20px solid rgb(81, 197, 81);

border-right:20px solid rgb(81, 197, 81);

-webkit-transform: rotate(45deg);

}

100%{

border-top:20px solid green;

border-right:20px solid green;

border-bottom:20px solid green;

border-left:20px solid green;

-webkit-transform: rotate(225deg);

}

</style>

</head>

<body>

</div>

</div>

</body>

</html>

浏览样例

2月 8, 2023

php使用curl无法获取https网页内容的解决办法

作者 5xue 在 php开发

方法1：

$url = "https://www.baidu.com/";
$ch = curl_init();
curl_setopt($ch,CURLOPT_SSL_VERIFYPEER, true);
curl_setopt($ch,CURLOPT_CAINFO, dirname(__FILE__).'/cacert.pem');
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HEADER, 0);
curl_exec($ch);
curl_close($ch);

$url = "https://www.baidu.com/";

$ch = curl_init();

curl_setopt($ch,CURLOPT_SSL_VERIFYPEER, true);

curl_setopt($ch,CURLOPT_CAINFO, dirname(__FILE__).'/cacert.pem');

curl_setopt($ch, CURLOPT_URL, $url);

curl_setopt($ch, CURLOPT_HEADER, 0);

curl_exec($ch);

curl_close($ch);

方法2：
通过设置php.ini文件，可以一劳永逸
openssl.cafile= “C:/WebServ/php7.4.4/cacert.pem”

cacert.pem下载地址：http://curl.haxx.se/ca/cacert.pem

分类目录Web开发