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How to take screenshot of a div with JavaScript?
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If you wish to have "Save as" dialog, just pass image into php script, which adds appropriate headers
Example "all-in-one" script script.php
<?php if(isset($_GET['image'])):
$image = $_GET['image'];
if(preg_match('#^data:image/(.*);base64,(.*)$#s', $image, $match)){
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mysql_fetch_array()/mysql_fetch_assoc()/mysql_fetch_row()/mysql_num_rows etc… expects parameter 1 to
...ion:
NOTE The mysql_ functions are deprecated and have been removed in php version 7.
Check $result before passing it to mysql_fetch_array. You'll find that it's false because the query failed. See the mysql_query documentation for possible return values and suggestions for how to deal with th...
How to zip a whole folder using PHP
...cript) to 777. For example: If script located in /var/www/localhost/script.php, then you need set chmod 0777 on dir /var/www/localhost/.
– Dador
Feb 6 '11 at 18:50
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支撑Github的开源技术 - 开源 & Github - 清泛网 - 专注C/C++及内核技术
...的大小超过了solor节点的最大存储空间，也出现了很多的问题，Github团队在思考解决方案时决定使用Elasticsearch做替换。Github最开始使用ES时，使用了44台亚马逊EC2实例，每台实例配备2T的存储，其中8台实例指负责查询请求。目前...
How do I properly escape quotes inside HTML attributes?
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If you are using PHP, try calling htmlentities or htmlspecialchars function.
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App Inventor 2开发简单计算器 - App Inventor 2 中文网 - 清泛IT论坛，有思想、有深度
...序执行过程、跟踪变量值的方法，可以帮我们找到原因。问题出在输入等号之后，此时： 前数=计算结果 后数=0 算符=“”接下来输入算符，由于算符=“”，因此执行点击算符过程的“如果...则”分支，第一行代码为【前数=后数...
Find and replace with sed in directory and sub directories
... worked for me:
find ./ -type f -exec sed -i '' 's#NEEDLE#REPLACEMENT#' *.php {} \;
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How do I insert NULL values using PDO?
...a value at the time of calling bindParam. I found this in a comment on the php docs:
bindValue(':param', null, PDO::PARAM_INT);
EDIT: P.S. You may be tempted to do this bindValue(':param', null, PDO::PARAM_NULL); but it did not work for everybody (thank you Will Shaver for reporting.)
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驯服Linux OOM Killer（优质英文资料翻译） - 操作系统(内核) - 清泛网移动...
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艾伦·考克斯不喜欢这个解决方案，这表明该容器是控制问题的最适当方式。为了响应这个建议，由 Nikanth Karthikesan 贡献的oom_killer 控制器提供了在系统内存不足时要杀死的进程序列的控制。该补丁引入了一个带有oom.priority字段...
What does “async: false” do in jQuery.ajax()?
... where one have to set async to false, for the code to work properly.
var phpData = (function get_php_data() {
var php_data;
$.ajax({
url: "http://somesite/v1/api/get_php_data",
async: false,
//very important: else php_data will be returned even before we get Json from the url
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