PHP tagged <?= <?php

PHP officially supports the following naming: <?php <?= <? <script language= "PHP" >, the most common use is combined with HTML to achieve the role of analytic data.

Recommended notation is the first: <?php?>

The second is <?=?> equivalent to <?php echo?> for example:

<?= "Hello World"?> equivalent to <?php echo "Hello World"?>

Before PHP 5.4 php.ini , the instructions in the configuration file must be opened before Short_open_tag is available. But after 5.4, you can use it at will.

The third kind of <? echo "Hello World"?>

This form is not parsed in HTML and will be interpreted as a comment

Fourth type <script language= "PHP" > echo "Hello World" </script>

This form is available before PHP7.0 and is not parsed.

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PHP separate notation

If statement:

<?php if ($expression = = true):?>  If so <?php else:?>  is like that <?php endif;?>

also equivalent to

<?php if ($expression = = True) {?>  if so <?php} else{?>  No is that <?php}?>

foreach Loop:

<table>    <tr>        <th>id</th>        <th> name </th>        <th> class </th >        <th> Admission time </th>    </tr>    <?php foreach ($items as $item) {?>        <tr>            <td><?= $item [' id '];?></td>            <td><?= $item [' name ']?></td>            < td><?= $item [' class ']?></td>            <td><?= $item [' join_time ']?></td>        </ Tr>    <?php}?></table>

It is extremely important to traverse the build list! and Jstl label likeness.

Complete!

PHP tagged <?= <?php