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You should remove the quotes from '75.00'
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You should remove the quotes from '75.00'

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What does this part do?<br />
<br />
ereg_replace(&quot;[^0-9\.\-]&quot;,<wbr /> 
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What does this part do?

ereg_replace("[^0-9\.\-]",

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what does ereg_replace(&quot;[^0-9\.\-]&quot;,<wbr /> &nbsp;do?
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what does ereg_replace("[^0-9\.\-]",  do?

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Hi,vrmetro:Thanks for the points! &nbsp;That ereg statement discards everything except the numerals, the decimal point and the minus sign. &nbsp;You would not get a meaningful answer if $_POST had &quot;$79.00&quot; in the field - unless you made some edits to control for the kind of data that work with arithmetic. ~Ray
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Hi,vrmetro:Thanks for the points!  That ereg statement discards everything except the numerals, the decimal point and the minus sign.  You would not get a meaningful answer if $_POST had "$79.00" in the field - unless you made some edits to control for the kind of data that work with arithmetic. ~Ray

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thanks Ray, much appreciated.
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<div class="content wysiwyg-content">
Hello,<br />
<br />
In the below code I am checking if a post value exists, if it does I want to reduce that amount by 75.00, is teh code below correct?<br />
<br />
Thank you.<br />

<pre><code id="code-163538">if (isset($_POST['amount']))
	{
	$_POST['amount']= ($_POST['amount']-'75.00');
	}
</code></pre>
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Hello,

In the below code I am checking if a post value exists, if it does I want to reduce that amount by 75.00, is teh code below correct?

Thank you.

reduce POST value by 75

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