如何在PHP 5.4中打印空白字符串？ [关闭]

Question

I tried using the '' or ' ' empty strings in PHP but it seems to have been trimmed when using the echo statement for displaying it in the browser.

echo '   the quick brown fox jumps over the lazy     dog.';

The statement above is been stripped of the white/blank spaces.

How can I do this in PHP? How can I print blank lines without them being stripped out?

Answer 1

PHP isn't stripping anything; your browser is ignoring the space. Right-click, View Source and you'll see what I mean. Either wrap the whole string in a <pre> tag, or use a non-breaking space, e.g.,  , for each piece of whitespace you want to leave. (Or use style='white-space: pre;' on the element.)

echo '   the quick brown fox jumps over the lazy     dog.';

Or:

echo '<pre>   the quick brown fox jumps over the lazy     dog.</pre>';

Or:

echo '<p style="white-space: pre;">   the quick brown fox jumps over the lazy     dog.</p>';

Or (@SecondRekudo):

Or send a Content-type: text/plain header.

Which would look like:

header('Content-type: text/plain');

Which needs to be called before any output to the browser (or you'll get a warning and the header won't be sent).