Bug #80902 [NEW]: is_null is not detecting nulls in array created via explode
From: floriparob at gmail dot com
Operating system: Debian 11
PHP version: 7.4.16
Package: Strings related
Bug Type: Bug
Bug description:is_null is not detecting nulls in array created via explode
Description:
------------
Version: 7.4.15-5+deb11u1
When you explode a string into an array, elements that contain nothing
(null) are detectable as such via is_null.
The only way to tell is any array element doesn't contain a value is to
strlen(trim($a_array[2])) == 0, which gives you the result you want, but
is a tad tedious.
I'm sure in prior versions is_null($a_array[2] would return true when
that array element is empty.
I cannot prove or disprove this as I don't have access to an older
version of PHP.
Test script:
---------------
<?php
$a_string = "awsed|34r5|||gh||";
$a_array = explode ("|", $a_string);
if (is_array($a_array)) {
$a_count = count($a_array);
echo "Number of Elements " . $a_count . PHP_EOL;
for ($i = 0; $i < $a_count; $i++) {
if (is_null($a_array[$i])) {
echo "Element " . $i . " Is NULL" . PHP_EOL;
} else {
echo "Element " . $i . " is " . $a_array[$i] . PHP_EOL;
}
}
} else {
echo "NOT AN ARRAY" . PHP_EOL;
}
?>
Expected result:
----------------
Number of Elements 7
Element 0 is awsed
Element 1 is 34r5
Element 2 Is NULL
Element 3 Is NULL
Element 4 is gh
Element 5 Is NULL
Element 6 Is NULL
Actual result:
--------------
Number of Elements 7
Element 0 is awsed
Element 1 is 34r5
Element 2 is
Element 3 is
Element 4 is gh
Element 5 is
Element 6 is
--
Edit bug report at https://bugs.php.net/bug.php?id=80902&edit=1
--
Fix committed: https://bugs.php.net/fix.php?id=80902&r=fixed
Fixed in release: https://bugs.php.net/fix.php?id=80902&r=alreadyfixed
Need backtrace: https://bugs.php.net/fix.php?id=80902&r=needtrace
Need Reproduce Script: https://bugs.php.net/fix.php?id=80902&r=needscript
Try newer version: https://bugs.php.net/fix.php?id=80902&r=oldversion
Not developer issue: https://bugs.php.net/fix.php?id=80902&r=support
Expected behavior: https://bugs.php.net/fix.php?id=80902&r=notwrong
Not enough info: https://bugs.php.net/fix.php?id=80902&r=notenoughinfo
Submitted twice: https://bugs.php.net/fix.php?id=80902&r=submittedtwice
register_globals: https://bugs.php.net/fix.php?id=80902&r=globals
PHP version support discontinued: https://bugs.php.net/fix.php?id=80902&r=phptooold
Daylight Savings: https://bugs.php.net/fix.php?id=80902&r=dst
IIS Stability: https://bugs.php.net/fix.php?id=80902&r=isapi
Install GNU Sed: https://bugs.php.net/fix.php?id=80902&r=gnused
Floating point limitations: https://bugs.php.net/fix.php?id=80902&r=float
No Zend Extensions: https://bugs.php.net/fix.php?id=80902&r=nozend
MySQL Configuration Error: https://bugs.php.net/fix.php?id=80902&r=mysqlcfg
Thread (2 messages)
- floriparob at gmail dot com