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POInteger check in PHP
 

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    <p>I'm writing an odds converter in PHP and came across <a href="http://www.sitepoint.com/forums/showthread.php?608881-Converting-Decimal-to-Fractions" rel="nofollow">this</a> code for converting decimal odds to fractional ones</p> <pre><code>function dec2frac($dec) { $decBase = --$dec; $div = 1; do { $div++; $dec = $decBase * $div; } while (intval($dec) != $dec); if ($dec % $div == 0) { $dec = $dec / $div; $div = $div / $div; } return $dec.'/'.$div; } </code></pre> <p>When I tested the code, it would sometimes succeed in the calculations and sometime try to load the page for some time without success so I figured that it got stuck in the loop somehow. I set the time limit to 1 second and an echo in the loop, which confirmed my suspicion. I added these two echoes to the loop so I could see what went wrong.</p> <pre><code>echo "$dec $div&lt;br/&gt;"; echo var_dump(intval($dec) == $dec)." $dec is int&lt;br/&gt;"; </code></pre> <p>Example printout when it fails, using decimal = 1.6</p> <p>1.2 2<br> bool(false) 1.2 is int<br> 1.8 3<br> bool(false) 1.8 is int<br> 2.4 4<br> bool(false) 2.4 is int<br> 3 5<br> bool(false) 3 is int //should break here and return 3/5<br> 3.6 6<br> bool(false) 3.6 is int<br> 4.2 7<br> bool(false) 4.2 is int</p> <p>Example printout when it succeeds, using decimal = 1.8</p> <p>1.6 2<br> bool(false) 1.6 is int<br> 2.4 3<br> bool(false) 2.4 is int<br> 3.2 4<br> bool(false) 3.2 is int<br> 4 5<br> bool(true) 4 is int </p> <p>Why doesn't it recognize the integers sometimes? How can I fix it so it exits the loop when an integer is found?</p>
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    1. CODo you have a question?
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    2. COWell, you've told us what you've done. How about asking a question? :)
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    3. COEdited so the question is more explicit.
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