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##bb9bd6d87db7f8730c53cb084e6b4d2d is the parser (long tag) of PHP. All code that needs to be run must be placed in the parser.
<?php echo "hello world"; ?>
Short tagb26da186e11666e6dd99f28d6205715c72637aecae1027e7d023ac098a170986 (Recommended learning: PHP Programming from Beginner to Master)
Short tags are only used to output variables or expressions. The general usage is
<?=$a?> <?=(表达式)?>, which is equivalent to
<?php echo $a?> <?php echo (表达式)?>. It does not support structures such as if and for. If you write
<?if(...?>, it will become
<!--if(...-->. Open the short tag. Open the short tag in PHP.INI: short_open_tag = On, PHP default tag character < ;?php ?>
So you must use long tags when writing programs, and short tags will be used when inserting output into html.
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