php/archived-doc-en
1
0
Fork 0
mirror of https://github.com/php/doc-en.git synced 2026-03-27 17:22:10 +01:00
Code Issues Packages Projects Releases Wiki Activity

Fix #79111: is_numeric documentation utterly incomplete

Browse Source 
We add information about leading and trailing whitespace.

Co-authored-by: Christoph M. Becker <cmbecker69@gmx.de>

Closes GH-870.
This commit is contained in:
Deleu
2021-08-22 19:54:52 +02:00
committed by Christoph M. Becker
parent c1f8c2ea33
commit ff054fcb4e
1 changed files with 67 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

67
reference/var/functions/is-numeric.xml
View File

@@ -104,6 +104,73 @@ NULL is NOT numeric
</screen>
</example>
</para>
<para>
<example>
<title><function>is_numeric</function> with whitespace</title>
<programlisting role="php">
<![CDATA[
<?php
$tests = [
" 42",
"42 ",
" 9001", // non-breaking space
"9001 ", // non-breaking space
];
foreach ($tests as $element) {
if (is_numeric($element)) {
echo var_export($element, true) . " is numeric", PHP_EOL;
} else {
echo var_export($element, true) . " is NOT numeric", PHP_EOL;
}
}
?>
]]>
</programlisting>
&example.outputs.8;
<screen>
<![CDATA[
' 42' is numeric
'42 ' is numeric
' 9001' is NOT numeric
'9001 ' is NOT numeric
]]>
</screen>
&example.outputs.7;
<screen>
<![CDATA[
' 42' is numeric
'42 ' is NOT numeric
' 9001' is NOT numeric
'9001 ' is NOT numeric
]]>
</screen>
</example>
</para>
</refsect1>
<refsect1 role="changelog">
&reftitle.changelog;
<informaltable>
<tgroup cols="2">
<thead>
<row>
<entry>&Version;</entry>
<entry>&Description;</entry>
</row>
</thead>
<tbody>
<row>
<entry>8.0.0</entry>
<entry>
Numeric strings ending with whitespace (<literal>"42 "</literal>) will now
return &true;. Previously, &false; was return instead.
</entry>
</row>
</tbody>
</tgroup>
</informaltable>
</refsect1>
<refsect1 role="seealso">