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ext/standard Deprecate passing empty string to realpath() #21201

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ext/standard Deprecate passing empty string to realpath() #21201

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0823b3e
ext/standard Deprecate passing empty string to realpath()
arshidkv12 Feb 11, 2026
25ac1a7
ext/standard Deprecate passing empty string to realpath()
arshidkv12 Feb 11, 2026
dad4fc7
@arshidkv12
arshidkv12 Feb 11, 2026
ccdd038
ext/standard Deprecate passing empty string to realpath()
arshidkv12 Feb 11, 2026
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4 changes: 4 additions & 0 deletions ext/standard/file.c
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Original file line number Diff line number Diff line change
Expand Up @@ -2106,6 +2106,10 @@ PHP_FUNCTION(realpath)
Z_PARAM_PATH(filename, filename_len)
ZEND_PARSE_PARAMETERS_END();

if (filename_len == 0) {
php_error_docref(NULL, E_DEPRECATED, "Passing empty string to realpath() is deprecated, use getcwd() instead");
}

if (VCWD_REALPATH(filename, resolved_path_buff)) {
if (php_check_open_basedir(resolved_path_buff)) {
RETURN_FALSE;
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4 changes: 4 additions & 0 deletions ext/standard/tests/file/readlink_realpath_variation3.phpt
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Expand Up @@ -43,10 +43,14 @@ bool(false)

Warning: readlink(): %s in %s on line %d
bool(false)

Deprecated: realpath(): Passing empty string to realpath() is deprecated, use getcwd() instead in %s on line %d
string(%d) "%s"
-- Iteration4 --

Warning: readlink(): %s in %s on line %d
bool(false)

Deprecated: realpath(): Passing empty string to realpath() is deprecated, use getcwd() instead in %s on line %d
string(%d) "%s"
Done
1 change: 1 addition & 0 deletions ext/standard/tests/file/realpath_bug77484.phpt
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Expand Up @@ -36,6 +36,7 @@ $rp2 = realpath('./');
var_dump($old_cwd, $new_cwd, $rp0, $rp1, $rp2);
?>
--EXPECTF--
Deprecated: realpath(): Passing empty string to realpath() is deprecated, use getcwd() instead in %s on line %d
string(%d) "%s"
bool(false)
bool(false)
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11 changes: 11 additions & 0 deletions ext/standard/tests/file/realpath_empty_string.phpt
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@@ -0,0 +1,11 @@
--TEST--
realpath() emits deprecation warning when passing empty string
--FILE--
<?php

var_dump(realpath(""));

?>
--EXPECTF--
Deprecated: realpath(): Passing empty string to realpath() is deprecated, use getcwd() instead in %s on line %d
string(%d) "%s"
4 changes: 4 additions & 0 deletions ext/standard/tests/file/realpath_variation-win32-mb.phpt
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Expand Up @@ -86,7 +86,11 @@ bool(false)
-- Iteration2 --
bool(false)
-- Iteration3 --

Deprecated: realpath(): Passing empty string to realpath() is deprecated, use getcwd() instead in %s on line %d
string(%d) "%s"
-- Iteration4 --

Deprecated: realpath(): Passing empty string to realpath() is deprecated, use getcwd() instead in %s on line %d
string(%d) "%s"
Done
4 changes: 4 additions & 0 deletions ext/standard/tests/file/realpath_variation-win32.phpt
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Expand Up @@ -86,7 +86,11 @@ bool(false)
-- Iteration2 --
bool(false)
-- Iteration3 --

Deprecated: realpath(): Passing empty string to realpath() is deprecated, use getcwd() instead in %s on line %d
string(%d) "%s"
-- Iteration4 --

Deprecated: realpath(): Passing empty string to realpath() is deprecated, use getcwd() instead in %s on line %d
string(%d) "%s"
Done
4 changes: 4 additions & 0 deletions ext/standard/tests/file/tempnam_variation3-win32.phpt
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Expand Up @@ -99,6 +99,10 @@ OK
-- Iteration 4 --

Notice: tempnam(): file created in the system's temporary directory in %stempnam_variation3-win32.php on line %d

Deprecated: realpath(): Passing empty string to realpath() is deprecated, use getcwd() instead in %s on line %d

Deprecated: realpath(): Passing empty string to realpath() is deprecated, use getcwd() instead in %s on line %d
Failed, not created in the correct directory %s vs %s
0
-- Iteration 5 --
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