How to output a string with a double quotation mark?

问题

I need to output a string, which is basically a java code:

I have something like this:

$web = "...if (url.contains('.mp4'))..."

I need that the single quotation mark, will be a double one, and not in html code.

Is it possible to do it?

回答1:

$new_str = str_replace('\'', '"', $web);

You could optional do it by modifying the actual string (note the use of \ to escape the quotation marks):

$web = "...if (url.contains(\".mp4\"))..."

回答2:

Short of doing a strtr() replacement, just escape your double quotes:

$web = "...if (url.contains(\".mp4\"))..."

See http://www.php.net/manual/en/language.types.string.php#language.types.string.syntax.double for the complete list of escaping rules.

回答3:

You can use like this

$web = "...if (url.contains(\".mp4\"))...";

回答4:

You should use this

<?php
$new = htmlspecialchars("<a href='test'>Test</a>", ENT_QUOTES);
echo $new; // &lt;a href=&#039;test&#039;&gt;Test&lt;/a&gt;
?>

see http://docs.php.net/manual/en/function.htmlspecialchars.php

来源：https://stackoverflow.com/questions/6168298/how-to-output-a-string-with-a-double-quotation-mark