I run PHP in JavaScript files, e.g....
我在JavaScript文件中运行PHP，例如....
var = '<?php /*some code*/ ?>';).
I need to use JavaScript to scan a string for PHP delimiters (the < ? php and ? > that open and close PHP).
我需要使用JavaScript来扫描PHP分隔符的字符串（<？php和？>打开和关闭PHP）。
I already know the code using JavaScript...
我已经使用JavaScript了解代码...
if (b.value.indexOf('<?php')>-1) {alert('PHP delimiter found.');}
What I'm having trouble with is that I need to keep the ability for PHP to be interpretted in JavaScript files (no exceptions). I simply need to output the delimiter strings to the client in JavaScript and not have them interpreted by the server.
我遇到的麻烦是我需要保持PHP文件中解释的能力（没有例外）。我只需要在JavaScript中将分隔符字符串输出到客户端，而不是由服务器解释它们。
So the final output (from the client's view) would be...
所以最终输出（来自客户的视图）将是...
if (b.value.indexOf('<?php')>-1) {alert('PHP delimiter found.');}
With the following code...
使用以下代码......
if (b.value.indexOf('<?php echo '<?php'; ?>')>-1 || b.value.indexOf('<?php echo '?>'; ?>')>-1)
I get the error: "Parse error: syntax error, unexpected T_LOGICAL_AND"
我收到错误：“解析错误：语法错误，意外T_LOGICAL_AND”
5 个解决方案
#1
1
You could take advantage of Javascript's ability to parse hex as a character:
您可以利用Javascript将十六进制解析为字符的能力：
if (b.value.indexOf('<\x3fphp')>-1) {alert('PHP delimiter found.');}
In Javascript '<\x3fphp' is exactly the same thing as '<?php', but it has no meaning in PHP.
在Javascript'<\ x3fphp'中与'<？php'完全相同，但在PHP中没有任何意义。
#2
2
Javascript will never find the <?php in your strings because simply, they have already been parsed by your PHP Server. Javascript is a client-side script and is executed after your server-side scripts.
Javascript永远不会在你的字符串中找到<？php，因为它们已经被PHP服务器解析了。 Javascript是一个客户端脚本，在服务器端脚本之后执行。
#3
0
Use output buffering on the PHP, then htmlspecialchars() on the buffered output. You then search for the HTML entities with the JavaScript.
在PHP上使用输出缓冲，然后在缓冲输出上使用htmlspecialchars（）。然后，您使用JavaScript搜索HTML实体。
#4
0
the first thing that came into my mind and should work is this simple, little "cheat":
我想到的第一件事应该是这个简单，小小的“作弊”：
<?php echo '<'.'?php'; ?>
the php interpreter doesn't see a <?php, but the output is as desired.
php解释器没有看到<？php，但输出是所希望的。
#5
0
<?php echo '<?php'; ?> ... <?php echo '?>'; ?>
<？php echo'<？php'; ？> ... <？php echo'？>'; ？>
#1
1
You could take advantage of Javascript's ability to parse hex as a character:
您可以利用Javascript将十六进制解析为字符的能力：
if (b.value.indexOf('<\x3fphp')>-1) {alert('PHP delimiter found.');}
In Javascript '<\x3fphp' is exactly the same thing as '<?php', but it has no meaning in PHP.
在Javascript'<\ x3fphp'中与'<？php'完全相同，但在PHP中没有任何意义。
#2
2
Javascript will never find the <?php in your strings because simply, they have already been parsed by your PHP Server. Javascript is a client-side script and is executed after your server-side scripts.
Javascript永远不会在你的字符串中找到<？php，因为它们已经被PHP服务器解析了。 Javascript是一个客户端脚本，在服务器端脚本之后执行。
#3
0
Use output buffering on the PHP, then htmlspecialchars() on the buffered output. You then search for the HTML entities with the JavaScript.
在PHP上使用输出缓冲，然后在缓冲输出上使用htmlspecialchars（）。然后，您使用JavaScript搜索HTML实体。
#4
0
the first thing that came into my mind and should work is this simple, little "cheat":
我想到的第一件事应该是这个简单，小小的“作弊”：
<?php echo '<'.'?php'; ?>
the php interpreter doesn't see a <?php, but the output is as desired.
php解释器没有看到<？php，但输出是所希望的。
#5
0
<?php echo '<?php'; ?> ... <?php echo '?>'; ?>
<？php echo'<？php'; ？> ... <？php echo'？>'; ？>