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POPHP beginner palindrome script
 

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    <p>I was working on (for fun) writing a script that would recognize palindromes. So far, I'm successful with "Kayak", "Racecar", "Anna", "A man a plan a canal Panama": yet variations on the latter phrase such as "amanaplana canalpan ama" gives me problems. </p> <p><em>As a side note:</em> I do understand that using PCRE would make things a lot easier for me, but I'm not fluent in it and one of my major aims was to understand the algorithm behind checking for palindromes.</p> <pre><code> &lt;?php $word = "amanaplana canalpan ama"; $space = " "; $word_smallcase = strtolower($word); $word_array = str_split($word_smallcase); if(in_array($space, $word_array)){ for($m = 0; $m&lt;count($word_array); $m = $m + 1){ if($word_array[$m] == $space) unset($word_array[$m]); } } $count = 0; $scan_count = -1; for($i = 0; $i &lt; (count($word_array)/2); $i = $i + 1){ for($j = count($word_array); $j &gt; (count($word_array)/2); $j = $j - 1){ if($word_array[$i]==$word_array[$j]){ $count = $count + 1; break; } } $scan_count = $scan_count + 1; } if ($count == $scan_count){ echo $word." is a palindrome"; } else{ echo $word ." is NOT a palindrome"; } ?&gt; </code></pre> <p>I'd appreciate a response regarding:</p> <ul> <li>The identification of the bug I'm having. </li> <li>Recommendations as to how I could possibly improve the code (I'd be happy if I could make things work without resorting to $count or $scan_count which seem, to my eye, relatively amateurish).</li> </ul> <p>Thanks in advance.</p>
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