Doc #80347 [NEW]: nl2br — DOES NOT Insert(s) HTML line breaks before all newlines in a string

From: Date: Tue, 10 Nov 2020 13:13:38 +0000
Subject: Doc #80347 [NEW]: nl2br — DOES NOT Insert(s) HTML line breaks before all newlines in a string
Groups: php.doc.bugs 
Request: Send a blank email to doc-bugs+get-18110@lists.php.net to get a copy of this message
From:             mh at phoenixchange dot com
Operating system: 
PHP version:      7.3.24
Package:          Documentation problem
Bug Type:         Documentation Problem
Bug description:nl2br — DOES NOT Insert(s) HTML line breaks before all newlines in a string

Description:
------------
---
From manual page: https://php.net/function.nl2br
---

It is not true that: "nl2br — Inserts HTML line breaks before all
newlines in a string".  It only does this if the string is double
quoted.

Generally perhaps there is no need to point this out, but on the nl2br
page it seems a central point.

User 'aabaev' posted the following 1 year ago, but as it's the fifth
comment in, past four that are pretty advanced.  I found it only after
the penny had finally dropped:

double quotes !== single quotes

php > echo nl2br('\r\n');
\r\n
php > echo nl2br("\r\n");
<br />

The manual (at string.php) says:

"If the string is enclosed in double-quotes ("), PHP will interpret the
following escape sequences for special characters: ...
... Sequence: \n  Meaning: linefeed (LF or 0x0A (10) in ASCII)" 

but nl2br is needed to introduce a LF in this case ...  



-- 
Edit bug report at https://bugs.php.net/bug.php?id=80347&edit=1
-- 
Fix committed:                    https://bugs.php.net/fix.php?id=80347&r=fixed
Fixed in release:                 https://bugs.php.net/fix.php?id=80347&r=alreadyfixed
Need backtrace:                   https://bugs.php.net/fix.php?id=80347&r=needtrace
Need Reproduce Script:            https://bugs.php.net/fix.php?id=80347&r=needscript
Try newer version:                https://bugs.php.net/fix.php?id=80347&r=oldversion
Not developer issue:              https://bugs.php.net/fix.php?id=80347&r=support
Expected behavior:                https://bugs.php.net/fix.php?id=80347&r=notwrong
Not enough info:                  https://bugs.php.net/fix.php?id=80347&r=notenoughinfo
Submitted twice:                  https://bugs.php.net/fix.php?id=80347&r=submittedtwice
register_globals:                 https://bugs.php.net/fix.php?id=80347&r=globals
PHP version support discontinued: https://bugs.php.net/fix.php?id=80347&r=phptooold
Daylight Savings:                 https://bugs.php.net/fix.php?id=80347&r=dst
IIS Stability:                    https://bugs.php.net/fix.php?id=80347&r=isapi
Install GNU Sed:                  https://bugs.php.net/fix.php?id=80347&r=gnused
Floating point limitations:       https://bugs.php.net/fix.php?id=80347&r=float
No Zend Extensions:               https://bugs.php.net/fix.php?id=80347&r=nozend
MySQL Configuration Error:        https://bugs.php.net/fix.php?id=80347&r=mysqlcfg


Thread (2 messages)

« previous php.doc.bugs (#18110) next »