WP_Filesystem_Base::getnumchmodfromh( string $mode ): string
- Since
- 2.5.0
- Source
wp-admin/includes/class-wp-filesystem-base.php:420
Description
Converts '-rw-r--r--' to 0644 From "info at rvgate dot nl"'s comment on the PHP documentation for chmod()
Compatibility
- WordPress
- since 2.5.0
- PHP
- 7.4–8.6-dev
- 6.7.7
- 6.8.8
- 6.9.7
- 7.0.4
- 7.1.0
Present in every tracked release (6.7.7 to 7.1.0), and compiles on PHP 7.4 through 8.6-dev.
Parameters
$modestring- string The *nix-style file permissions.
Return value
string- Octal representation of permissions.
Performance profile
How much work a call to WP_Filesystem_Base::getnumchmodfromh() does, and what it touches: the algorithmic scaling, the Zend instruction count per call across PHP versions, the hooks it hands control to, and the core code that calls it. Measured from the compiled opcodes, not a stopwatch, so every number is identical on any machine running the same PHP version, and every function in core is ranked by cost.
- Cost class
- Light
- Scaling
- Scales with input
- Instructions
- 41
- Plugin surface
- None
- Called by
- 0
Touches nothing outside its own arguments.
The body loops, so the work grows with what you pass in.
Executed per call on PHP 8.5. The body compiles to 52.
Nothing here hands control to plugin code.
Nothing in core calls this; the cost is only what you spend yourself.
What it touches
- regexregular expression over the whole input
preg_split()called directly
What one call costs · 1 distinct outcome
One number would be a lie: the work depends on which branch runs. These are every distinct cost WP_Filesystem_Base::getnumchmodfromh() can have, taken from its control-flow graph on PHP 8.5.
| When | Instructions | Calls it makes |
|---|---|---|
!$i | 41 | preg_split(), str_pad() |
Across PHP versions
| PHP | Compiled | Executed | Branches | Notes |
|---|---|---|---|---|
| 8.6-dev | 52 | 41 | 2 | |
| 8.5 | 52 | 41 | 2 | |
| 8.4 | 52 | 41 | 2 | 3 fewer instructions than PHP 8.3 |
| 8.3 | 55 | 44 | 2 | |
| 8.2 | 55 | 44 | 2 | |
| 8.1 | 55 | 44 | 2 | |
| 7.4 | 55 | 44 | 2 |
An instruction is not a fixed amount of time, so a matching count is not necessarily the same speed; what it rules out is a difference in the work itself.
Source code
public function getnumchmodfromh( $mode ) { $realmode = ''; $legal = array( '', 'w', 'r', 'x', '-' ); $attarray = preg_split( '//', $mode ); for ( $i = 0, $c = count( $attarray ); $i < $c; $i++ ) { $key = array_search( $attarray[ $i ], $legal, true ); if ( $key ) { $realmode .= $legal[ $key ]; } } $mode = str_pad( $realmode, 10, '-', STR_PAD_LEFT ); $trans = array( '-' => '0', 'r' => '4', 'w' => '2', 'x' => '1', ); $mode = strtr( $mode, $trans ); $newmode = $mode[0]; $newmode .= $mode[1] + $mode[2] + $mode[3]; $newmode .= $mode[4] + $mode[5] + $mode[6]; $newmode .= $mode[7] + $mode[8] + $mode[9]; return $newmode; }Changelog
Introduced in 2.5.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
About this page
- Parsed data
- Generated from the wordpress-develop 7.0.4 tag, from
src/wp-admin/includes/class-wp-filesystem-base.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it. - Corrections
- Something wrong on this page? Report it and it gets fixed in the next regeneration.