I have a large mathematical expression that has to be created dynamically. For example, once I have parsed "something" the result will be a string like: "$foo+$bar/$baz"; . So, for calculating the result of that expression I'm using the eval function... something like this: eval("$result = $expresion;"); echo "The result is: $result"; The problem here is that sometim
我有一个很大的数学表达式，必须动态创建。 例如，一旦我分析了“某些东西”，结果将是一个字符串，如： "$foo+$bar/$baz"; 。 所以，为了计算这个表达式的结果，我使用了eval函数......就像这样： eval("$result = $expresion;"); echo "The result is: $result"; 这里的问题是，有时候我得到的错误说有一个除零，我不知道如何捕获这个异常。 我尝试过这样的事情： eval("try{$result = $expresion;}catch(Excep
How to suppress the "Division by zero" error and set the result to null for the whole application ? By saying "for the whole application", I mean it is not for a single expression. Instead, whenever a "Division by zero" error occurs, the result is set to null automatically and no error will be thrown. This should do the trick. $a = @(1/0); if(false === $a) {
如何在整个应用程序中禁止“除零除”错误并将结果设置为空？ 通过说“为整个应用程序”，我的意思是它不是一个单一的表达。 相反，每当发生“除零除错”错误时，结果将自动设置为空，并且不会抛出错误。 这应该做的伎俩。 $a = @(1/0); if(false === $a) { $a = null; } var_dump($a); 输出 NULL 请参阅此处的参考错误控制。 编辑 function division($a, $b) { $c = @(a/b); if($b === 0) { $c = null;
I recently bought a WordPress theme that does a fancy gallery display of photos and it has been getting the following errors on the homepage. Warning: Division by zero in /home/content/21/4913121/html/stsudios/wp-content/themes/dt-chocolate/front-gal.php on line 36 Warning: Division by zero in /home/content/21/4913121/html/stsudios/wp-content/themes/dt-chocolate/front-gal.php on line 48 The
我最近买了一个WordPress主题，用来做一个精美的画廊展示照片，并且它已经在主页上发现了以下错误。 警告：在第36行的/home/content/21/4913121/html/stsudios/wp-content/themes/dt-chocolate/front-gal.php中用零分区 警告：在48行/home/content/21/4913121/html/stsudios/wp-content/themes/dt-chocolate/front-gal.php上划分零 以下是通过第50行的代码 - 带/**/的行是故障行。 任何帮助表示赞赏！ <?php global $
I am doing a calculation with an array which is drawn from mysql and the problem is "division by zero" warning I am running a loop over this statment $v = (($v - $valuei)/($valuei) * 100); Here $v is is changing (let's say from 100 to 150 eg 100, 101, 102, 103,...,150) and $valuei is the intial value of $v (ie 100) So, when the calculation will start first output should be zero
我正在做一个数组，这是从MySQL中得出的计算，问题是“除零”警告 我正在对这个陈述进行循环 $v = (($v - $valuei)/($valuei) * 100); 这里$ v正在变化（假设从100到150，例如100,101,102,103，...，150），$ valuei是$ v的初始值（即100）。因此，当计算首先开始时输出应为零，并且我想要零，那么为什么它会发出警告“按零分区”，并使所有“$ v”值都等于零。 警告表明，在其中一次运行中，$ valuei实际上是0。 你确定，$ v
I am using the following static method for sending mail alerts, but its throwing an error: warning:division by zero ... Postman::MailAlert($_POST['email'],'Hello '.$_POST['name'].', Thanks for signing up.Your customer id is '.$_POST['city']/'/'.$product_id.'.'); I have solved this issue by putting @, but why is this issue raised, and what am I doing wrong? Just the problem part: $_POST['city
我正在使用下面的静态方法发送邮件警报，但它抛出一个错误： warning:division by zero ... Postman::MailAlert($_POST['email'],'Hello '.$_POST['name'].', Thanks for signing up.Your customer id is '.$_POST['city']/'/'.$product_id.'.'); 我已经通过把@解决了这个问题，但为什么会引发这个问题，我做错了什么？ 问题部分： $_POST['city']/'/'.$product_id.'.'); 需要像这样改变。 $_POST['city'] . '/'.$product_
When I set the root password in PHPMyAdmin, I get this error: #1045 - Access denied for user 'root'@'localhost' (using password: NO) I can't open the PHPMyAdmin panel. What am I doing wrong? 编辑你的phpmyadmin config.inc.php文件，如果你有密码，在密码前插入以下代码： $cfg['Servers'][$i]['verbose'] = 'localhost'; $cfg['Servers'][$i]['host'] = 'localhost'; $cfg['Servers'][$i]['port'] = '3306
当我在PHPMyAdmin中设置root密码时，出现此错误： #1045 - Access denied for user 'root'@'localhost' (using password: NO) 我无法打开PHPMyAdmin面板。 我究竟做错了什么？ 编辑你的phpmyadmin config.inc.php文件，如果你有密码，在密码前插入以下代码： $cfg['Servers'][$i]['verbose'] = 'localhost'; $cfg['Servers'][$i]['host'] = 'localhost'; $cfg['Servers'][$i]['port'] = '3306'; $cfg['Servers'][$i]['socket'
i have this php function to read my dbinfo out of a textfile on my pc: function loaddb(){ $fh = fopen('dta.txt','r'); $line = fgets($fh); $_SESSION['dbname']=$line; $line = fgets($fh); $_SESSION['dbuser']=$line; $line = fgets($fh); $_SESSION['dbpass']=$line; $line = fgets($fh); $_SESSION['server']=$line;
我有这个PHP函数来读取我的电脑上的文本文件我的dbinfo： function loaddb(){ $fh = fopen('dta.txt','r'); $line = fgets($fh); $_SESSION['dbname']=$line; $line = fgets($fh); $_SESSION['dbuser']=$line; $line = fgets($fh); $_SESSION['dbpass']=$line; $line = fgets($fh); $_SESSION['server']=$line;
I'm trying to execute some PHP code on a project (using Dreamweaver) but the code isn't being run. When I check the source code, the PHP code appears as HTML tags (I can see it in the source code). Apache is running properly (I'm working with XAMPP), the PHP pages are being opened properly but the PHP code isn't being executed. Does someone have a suggestion about what is hap
我试图在项目上执行一些PHP代码（使用Dreamweaver），但代码没有运行。 当我检查源代码时，PHP代码显示为HTML标签（我可以在源代码中看到它）。 Apache运行正常（我正在使用XAMPP），PHP页面正在正确打开，但PHP代码未被执行。 有人对发生了什么有什么建议吗？ 注意：该文件已被命名为filename.php 编辑：代码..： <? include_once("/code/configs.php"); ?> 听起来你的配置有问题，这里有几件事你可以检查：
I'm getting this error on an avatar upload on my site. I've never gotten it before and nothing was changed recently for me to begin getting this error... Warning: is_writable() [function.is-writable]: open_basedir restriction in effect. File(/) is not within the allowed path(s): Modify the open_basedir settings in your PHP configuration (See Runtime Configuration). The open_basedir
我在我的网站上通过头像上传出现此错误。 我从来没有得到它，最近没有什么变化，我开始得到这个错误... Warning: is_writable() [function.is-writable]: open_basedir restriction in effect. File(/) is not within the allowed path(s): 修改您的PHP配置中的open_basedir设置（请参阅运行时配置）。 open_basedir设置主要用于防止特定用户的PHP脚本访问另一用户帐户中的文件。 所以通常情况下，您自己帐户中的任何文
PHP is writing this error in the logs: "Notice: Use of undefined constant". Error in logs: PHP Notice: Use of undefined constant department - assumed 'department' (line 5) PHP Notice: Use of undefined constant name - assumed 'name' (line 6) PHP Notice: Use of undefined constant email - assumed 'email' (line 7) PHP Notice: Use of undefined constant message - assumed 'message' (lin
PHP在日志中写入这个错误：“注意：使用未定义的常量”。 日志中的错误： PHP Notice: Use of undefined constant department - assumed 'department' (line 5) PHP Notice: Use of undefined constant name - assumed 'name' (line 6) PHP Notice: Use of undefined constant email - assumed 'email' (line 7) PHP Notice: Use of undefined constant message - assumed 'message' (line 8) 相关的代码行： $department