blocks|key|1641084|text|$rootbeer+=+(float)+$InvoicedUnits;|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1641085|应该会为你做的。查看Type-Juggling。您还应该阅读String+conversion+to+Numbers。|unstyled|offset|length|1641086|entityMap|0|LINK|mutability|MUTABLE|url|http://us2.php.net/language.types.type-juggling|1|http://us2.php.net/manual/en/language.types.string.php#language.types.string.conversion^0|0|A|D|0|U|S|1|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|T|8|@]|9|@$G|U|H|V|1|W]|$G|X|H|Y|1|Z]]|A|$]]|$1|I|3|-4|5|F|7|10|8|@]|9|@]|A|$]]]|J|$K|$5|L|M|N|A|$O|P]]|Q|$5|L|M|N|A|$O|R]]]]

<pre><code>$rootbeer = (float) $InvoicedUnits;
</code></pre>

Should do it for you. Check out <a href="http://us2.php.net/language.types.type-juggling" rel="noreferrer">Type-Juggling</a>. You should also read <a href="http://us2.php.net/manual/en/language.types.string.php#language.types.string.conversion" rel="noreferrer">String conversion to Numbers</a>.

blocks|key|1426203|text|好吧，如果用户写1,00000，那么floatvar将显示错误。所以-|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1426204|floatval(preg_replace("/[%5E-0-9\.]/","",$input));|code-block|syntax|javascript|1426205|这要可靠得多。|1426206|用法：|1426207|$input+=+'1,03,24,23,434,500.6798633+this';
echo+floatval(preg_replace("/[%5E-0-9\.]/","",$input));|1426208|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|S|8|@]|9|@]|A|$E|F]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Well, if user write 1,00,000 then floatvar will show error. So - 

<pre><code>floatval(preg_replace("/[^-0-9\.]/","",$input));
</code></pre>

This is much more reliable.

Usage : 

<pre><code>$input = '1,03,24,23,434,500.6798633 this';
echo floatval(preg_replace("/[^-0-9\.]/","",$input));
</code></pre>

blocks|key|1426248|text|处理floats中的标记不是一项简单的任务。在英式/美式表示法中，你的格式是一千加46*10-2|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1426249|1,000.46|code-block|syntax|javascript|1426250|但在德国，您需要更改逗号和点：|1426251|1.000,46|1426252|这使得在多语言应用程序中很难猜测正确的数字。|1426253|我强烈建议使用Zend+Framework的Zend_Measure来完成这项任务。该组件将根据用户的语言将字符串解析为浮点型。|1426254|entityMap^0|15|7|0|0|0|0|0|M|C|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|X|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|Y|8|@]|D|@]|E|$]]|$1|M|3|N|5|H|7|Z|8|@]|D|@]|E|$I|J]]|$1|O|3|P|5|6|7|10|8|@]|D|@]|E|$]]|$1|Q|3|R|5|6|7|11|8|@$9|12|A|13|B|C]]|D|@]|E|$]]|$1|S|3|-4|5|6|7|14|8|@]|D|@]|E|$]]]|T|$]]

Dealing with markup in floats is a non trivial task. In the English/American notation you format one thousand plus <code>46*10-2</code>:

<pre><code>1,000.46
</code></pre>

But in Germany you would change comma and point:

<pre><code>1.000,46
</code></pre>

 
This makes it really hard guessing the right number in multi-language applications. 
I strongly suggest using <code>Zend_Measure</code> of the Zend Framework for this task. This component will parse the string to a float by the users language.

blocks|key|1426596|text|您可以通过此link了解有关如何在PHP语言中将字符串/数字转换为数字/浮点数/小数的更多信息。这是这个链接所说的.|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1426597|方法1:使用number_format()函数。number_format()函数用于将字符串转换为数字。如果成功则返回格式化的数字，否则在失败时返回E_WARNING。|1426598|$num+=+"1000.314";+

//Convert+string+in+number+using++
//number_format(),+function+
echo+number_format($num),+"\n";+

//Convert+string+in+number+using++
//number_format(),+function+
echo+number_format($num,+2);+|code-block|syntax|javascript|1426599|方法2:使用类型转换:类型转换可以直接将字符串转换为浮点型、双精度型或整型基元类型。这是将字符串转换为没有任何函数的数字的最佳方法。|1426600|//+Number+in+string+format+
$num+=+"1000.314";+

//+Type+cast+using+int+
echo+(int)$num,+"\n";+

//+Type+cast+using+float+
echo+(float)$num,+"\n";+

//+Type+cast+using+double+
echo+(double)$num;+|1426601|方法3:使用intval()和floatval()函数。intval()和float+intval()函数也可用于将字符串分别转换为其相应的整数值和浮点值。|1426602|//+Number+in+string+format+
$num+=+"1000.314";+

//+intval()+function+to+convert++
//+string+into+integer+
echo+intval($num),+"\n";+

//+floatval()+function+to+convert+
//+string+to+float+
echo+floatval($num);+|1426603|方法4:通过添加0或执行数学运算。字符串数字也可以通过在字符串中添加0来转换为整数或浮点数。在PHP中，执行数学运算时，字符串会隐式转换为整数或浮点数。|1426604|//+Number+into+string+format+
$num+=+"1000.314";+

//+Performing+mathematical+operation++
//+to+implicitly+type+conversion+
echo+$num+%2B+0,+"\n";+

//+Performing+mathematical+operation++
//+to+implicitly+type+conversion+
echo+$num+%2B+0.0,+"\n";+

//+Performing+mathematical+operation++
//+to+implicitly+type+conversion+
echo+$num+%2B+0.1;|1426605|entityMap|0|LINK|mutability|MUTABLE|url|https://www.geeksforgeeks.org/how-to-convert-a-string-into-number-in-php/^0|6|4|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|14|8|@]|9|@$A|15|B|16|1|17]]|C|$]]|$1|D|3|E|5|6|7|18|8|@]|9|@]|C|$]]|$1|F|3|G|5|H|7|19|8|@]|9|@]|C|$I|J]]|$1|K|3|L|5|6|7|1A|8|@]|9|@]|C|$]]|$1|M|3|N|5|H|7|1B|8|@]|9|@]|C|$I|J]]|$1|O|3|P|5|6|7|1C|8|@]|9|@]|C|$]]|$1|Q|3|R|5|H|7|1D|8|@]|9|@]|C|$I|J]]|$1|S|3|T|5|6|7|1E|8|@]|9|@]|C|$]]|$1|U|3|V|5|H|7|1F|8|@]|9|@]|C|$I|J]]|$1|W|3|-4|5|6|7|1G|8|@]|9|@]|C|$]]]|X|$Y|$5|Z|10|11|C|$12|13]]]]

you can follow this <a href="https://www.geeksforgeeks.org/how-to-convert-a-string-into-number-in-php/" rel="nofollow noreferrer">link</a> to know more about How to convert a string/number into number/float/decimal in PHP.
HERE IS WHAT THIS LINK SAYS...

Method 1: Using number_format() Function. The number_format() function is used to convert a string into a number. It returns the formatted number on success otherwise it gives E_WARNING on failure.

<pre><code>$num = "1000.314"; 

//Convert string in number using 
//number_format(), function 
echo number_format($num), "\n"; 

//Convert string in number using 
//number_format(), function 
echo number_format($num, 2); 
</code></pre>

Method 2: Using type casting: Typecasting can directly convert a string into a float, double, or integer primitive type. This is the best way to convert a string into a number without any function.

<pre><code>// Number in string format 
$num = "1000.314"; 

// Type cast using int 
echo (int)$num, "\n"; 

// Type cast using float 
echo (float)$num, "\n"; 

// Type cast using double 
echo (double)$num; 
</code></pre>

Method 3: Using intval() and floatval() Function. The intval() and floatval() functions can also be used to convert the string into its corresponding integer and float values respectively.

<pre><code>// Number in string format 
$num = "1000.314"; 

// intval() function to convert 
// string into integer 
echo intval($num), "\n"; 

// floatval() function to convert 
// string to float 
echo floatval($num); 
</code></pre>

Method 4: By adding 0 or by performing mathematical operations. The string number can also be converted into an integer or float by adding 0 with the string. In PHP, performing mathematical operations, the string is converted to an integer or float implicitly.

<pre><code>// Number into string format 
$num = "1000.314"; 

// Performing mathematical operation 
// to implicitly type conversion 
echo $num + 0, "\n"; 

// Performing mathematical operation 
// to implicitly type conversion 
echo $num + 0.0, "\n"; 

// Performing mathematical operation 
// to implicitly type conversion 
echo $num + 0.1;
</code></pre>

blocks|key|1426343|text|使用此函数可以从任何类型的文本样式转换浮点值：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1426344|function+parseFloat($value)+{
++++return+floatval(preg_replace('#%5E([-]*[0-9\.,\'+]%2B?)((\.%7C,){1}([0-9-]{1,3}))*$#e',+"str_replace(array('.',+',',+\"'\",+'+'),+'',+'\\1')+.+'.\\4'",+$value));
}|code-block|syntax|javascript|1426345|此解决方案不依赖于任何区域设置。因此，对于用户输入，用户可以以任何他们喜欢的方式输入浮点值。这真的很有帮助，例如，当你有一个项目，它只是英语，但世界各地的人都在使用它，可能没有想到该项目需要一个点，而不是一个逗号的浮点值。您可以混合使用javascript并获取浏览器的默认设置，但仍然有许多人将这些值设置为英语，但仍然键入1,25而不是1.25+(特别是但不限于翻译行业、研究和IT)|1426346|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Use this function to cast a float value from any kind of text style:

<pre><code>function parseFloat($value) {
 return floatval(preg_replace('#^([-]*[0-9\.,\' ]+?)((\.|,){1}([0-9-]{1,3}))*$#e', "str_replace(array('.', ',', \"'\", ' '), '', '\\1') . '.\\4'", $value));
}
</code></pre>

This solution is not dependant on any locale settings. Thus for user input users can type float values in any way they like. This is really helpful e.g. when you have a project wich is in english only but people all over the world are using it and might not have in mind that the project wants a dot instead of a comma for float values.
You could throw javascript in the mix and fetch the browsers default settings but still many people set these values to english but still typing 1,25 instead of 1.25 (especially but not limited to the translation industry, research and IT)

blocks|key|1641349|text|我遇到了一个标准方法的问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1641350|$string+=+"one";

$float+=+(float)$string;

echo+$float;+:+(+Prints+0+)|code-block|syntax|javascript|1641351|如果没有有效的数字，解析器不应该返回数字，它应该抛出一个错误。(这是我试图在我的代码YMMV中捕获的条件)|1641352|为了解决这个问题，我做了以下工作：|1641353|$string+=+"one";

$float+=+is_numeric($string)+?+(float)$string+:+null;

echo+$float;+:+(+Prints+nothing+)|1641354|然后，在进一步处理转换之前，如果没有有效的字符串解析，我可以检查并返回一个错误。|1641355|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|T|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|U|8|@]|9|@]|A|$E|F]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

I was running in to a problem with the standard way to do this:

<pre><code>$string = "one";

$float = (float)$string;

echo $float; : ( Prints 0 )
</code></pre>

If there isn't a valid number, the parser shouldn't return a number, it should throw an error. (This is a condition I'm trying to catch in my code, YMMV)

To fix this I have done the following:

<pre><code>$string = "one";

$float = is_numeric($string) ? (float)$string : null;

echo $float; : ( Prints nothing )
</code></pre>

Then before further processing the conversion, I can check and return an error if there wasn't a valid parse of the string.

blocks|key|1426497|text|如果您需要处理无法单独转换的值，可以使用此方法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1426498|try+{
++++$valueToUse+=+trim($stringThatMightBeNumeric)+%2B+0;
}+catch+(\Throwable+$th)+{
++++//+bail+here+if+you+need+to
}|code-block|syntax|javascript|1426499|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

If you need to handle values that cannot be converted separately, you can use this method:

<pre><code>try {
 $valueToUse = trim($stringThatMightBeNumeric) + 0;
} catch (\Throwable $th) {
 // bail here if you need to
}
</code></pre>

I am not familiar with PHP at all and had a quick question.

I have 2 variables <code>pricePerUnit</code> and <code>InvoicedUnits</code>. Here's the code that is setting these to values:

<pre><code>$InvoicedUnits = ((string) $InvoiceLineItem-&gt;InvoicedUnits);
$pricePerUnit = ((string) $InvoiceLineItem-&gt;PricePerUnit);
</code></pre>

If I output this, I get the correct values. Lets say <code>5000</code> invoiced units and <code>1.00</code> for price.

Now, I need to show the total amount spent. When I multiply these two together it doesn't work (as expected, these are strings).

But I have no clue how to parse/cast/convert variables in PHP.

What should I do?

PHP String to Float

PHP语言

我对PHP一点也不熟悉，我有一个简短的问题。我有两个变量pricePerUnit和InvoicedUnits。下面是将这些设置为值的代码：$InvoicedUnits = ((string) $InvoiceLineItem->InvoicedUnits);$pricePerUnit = ((string) $InvoiceLineItem->PricePerUnit);如果我输出这个，我会得到正

问要浮点的PHP字符串
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回答 7

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