R. Rajesh Jeba Anbiah wrote:
Quote:
Chung Leong wrote:
<snip>
Quote:
Text outside of <?php ?is compiled to echo operations. So there's no
basic difference between the two methods.
>
If it's true, manual is contradicting:
>
<quote src="http://in.php.net/language.basic-syntax#AEN2651">
>
<snip>
} else {
?>
<strong>This is false.</strong>
<?php
}
?>
>
This works as expected, because when PHP hits the ?closing tags, it
simply starts outputting whatever it finds until it hits another
opening tag. The example given here is contrived, of course, but for
outputting large blocks of text, dropping out of PHP parsing mode is
generally more efficient than sending all of the text through echo() or
print().
>
</quote>
It's poorly worded in the manual. Clearly, what is expected is that the
conditional would determine whether the HTML appear or not. If PHP
simply outputs anything outside of <?php ... ?>, then both blocks would
always appear. Nor would the following work as "expected."
<?php foreach($words as $word) { ?>
<li><?php echo $word; ?></li>
<?php } ?>
Think about it. The way I described it is the only way it could work.
The PHP language engine cannot control something that isn't part of the
code-stream.
Anyway, it's in the source code. If you look in zend_compile.c, you
will find this:
switch(retval) {
[...]
case T_OPEN_TAG_WITH_ECHO:
retval = T_ECHO;
break;
[...]
}
retval comes from lexical analyzer (lex). As you can see, when <?php is
encountered, an echo op-code is added--for the text that comes before.
