@cwjacklin
It could be anything from the way the operating-systems handles files to the way your PHP editor saves files.
(Some of them trim trailing white-spaces, some don't).
It's best just to make sure there is no room for misinterpretation by not leaving white-spaces where they shouldn't be.
@cwjacklin
Anything outside <?php ?> tags is usually considered HTML by Apache and added to the output accordingly.
Consider this:
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<html>
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<head><title>Test</tile></head>
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<body>
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<table>
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<?php
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for($i = 0; $i < 5; ++$i) {
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echo "<tr>";
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for($j = 0; $j < 5; ++$j) {
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echo "<td>", pow($j, $i), "</td>";
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}
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echo "</tr>";
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}
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?>
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</table>
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</body>
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</html>
If nothing unless the echo statements made it to the output, this type of syntax could not be used.
And keep in mind that a HTML infused PHP code like that is often included. In fact, I'm pretty sure the Smarty template engine does a lot of that.
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