Delete to word start

`Ctrl` + `Backspace`

All hotkeys for JetBrains PhpStorm (Windows)

General Shortcuts Open Corresponding Tool Window	`Alt` + `0..9`
General Shortcuts Save All	`Ctrl` + `S`
General Shortcuts Toggle Maximize Editor	`Ctrl` + `Shift` + `F12`
General Shortcuts Find Action	`Ctrl` + `Shift` + `A`
General Shortcuts Switch Editor Tabs and IDE Tool Windows	`Ctrl` + `Tab`
General Shortcuts Open Setting Dialog	`Ctrl` + `Alt` + `S`
General Shortcuts Toggle Full Screen Mode	`Ctrl` + `Alt` + `F11`
General Shortcuts Add to Favourites	`Alt` + `Shift` + `F`
General Shortcuts Search Everywhere	`Double Shift`
General Shortcuts Inspect Current file with Current file	`Alt` + `Shift` + `I`
Debugging Step Out	`Shift` + `F8`
Debugging Step Over	`F8`
Debugging Step Into	`F7`
Debugging Evaluate Expression	`Alt` + `F8`
Debugging Toggle Breakpoint	`Ctrl` + `F8`
Debugging View Breakpoints	`Ctrl` + `Shift` + `F8`
Debugging Resume Program	`F9`
Find and Replace Find	`Ctrl` + `F`
Find and Replace Replace	`Ctrl` + `R`
Find and Replace Find Next	`F3`
Find and Replace Find Previous	`Shift` + `F3`
Find and Replace Find in Path	`Ctrl` + `Shift` + `F`
Find and Replace Replace in Path	`Ctrl` + `Shift` + `R`
Editing Basic Code Completion	`Ctrl` + `Spacebar`
Editing Class name Completion	`Ctrl` + `Alt` + `Spacebar`
Editing Quick Documentation Lookup	`Ctrl` + `Q`
Editing Brief Info	`Ctrl` + `Mouse Over`
Editing Complete Statement	`Ctrl` + `Shift` + `Enter`
Editing Parameter Information	`Ctrl` + `P`
Editing Override Methods	`Ctrl` + `O`
Editing Generate Code	`Alt` + `Insert`
Editing Move Line(Selection) Up/Down	`Ctrl` + `Shift` + `Up Arrow` / `Down Arrow`
Editing Surround With..(Begin..End etc.)	`Ctrl` + `Alt` + `T`
Editing Comment/Uncomment with Line Comment	`Ctrl` + `/`
Editing Comment/Uncomment with Block Comment	`Ctrl` + `Shift` + `/`
Editing Implements Method	`Ctrl` + `I`
Editing Show Intention Actions and Quick Fixes	`Alt` + `Enter`
Editing Reformat Code	`Ctrl` + `Alt` + `L`
Editing Duplicate Current Line	`Ctrl` + `D`
Editing Cut/Copy/Paste Current line to Clipboard	`Ctrl` + `X` / `Ctrl` + `C` / `Ctrl` + `V`
Editing AutoIndent Lines	`Ctrl` + `Alt` + `I`
Editing Delete line at caret	`Ctrl` + `Y`
Editing Start New line	`Shift` + `Enter`
Editing Close Active editor tab	`Ctrl` + `F4`
Editing Show Intention Actions/Quick-Fixes	`Alt` + `Enter`
Editing Decrease Current Selection to Previous State	`Ctrl` + `Shift` + `W`
Editing Select Successively Incresing Code blocks	`Ctrl` + `W`
Editing Expand/Collapse Code block	`Ctrl` + `NumPad +` / `Ctrl` + `NumPad -`
Editing Delete to end word	`Ctrl` + `Del`
Editing Delete to word start	`Ctrl` + `Backspace`
Editing Select till code block end	`Ctrl` + `Shift` + `]`
Editing Select till code block start	`Ctrl` + `Shift` + `[`
Editing Switch case for Word at Caret or Selected block	`Ctrl` + `Shift` + `U`
Refactoring Copy	`F5`
Refactoring Move	`F6`
Refactoring Safe Delete	`Alt` + `Del`
Refactoring Rename	`Shift` + `F6`
Refactoring Inline Variable	`Ctrl` + `Alt` + `N`
Refactoring Refactor This(Show All Available Refactoring)	`Ctrl` + `Alt` + `Shift` + `T`
Refactoring Extract Method	`Ctrl` + `Alt` + `M`
Refactoring Introduce Field	`Ctrl` + `Alt` + `F`
Refactoring Introduce Constant	`Ctrl` + `Alt` + `C`
Refactoring Introduce Variable	`Ctrl` + `Alt` + `V`
Navigation Go to Class	`Ctrl` + `N`
Navigation Go to File	`Ctrl` + `Shift` + `N`
Navigation Go to Symbol	`Ctrl` + `Alt` + `Shift` + `N`
Navigation Next highlighted Error	`F2`
Navigation Previous highlighted Error	`Shift` + `F2`
Navigation Go to Line	`Ctrl` + `G`
Navigation Recent files Popup	`Ctrl` + `E`
Navigation Select current file/Symbol in any View	`Alt` + `F1`
Navigation Go to Next/Previous Tab	`Alt` + `Left Arrow` / `Alt` + `Right Arrow`
Navigation Go to Declaration	`Ctrl` + `B`
Navigation Go to Implementation	`Ctrl` + `Alt` + `B`
Navigation Go to Type Declaration	`Ctrl` + `Shift` + `B`
Navigation Navigate back/forward	`Ctrl` + `Alt` + `Left Arrow` / `Ctrl` + `Alt` + `Right Arrow`
Navigation Go to last edit location	`Ctrl` + `Shift` + `Backspace`
Navigation Go to super method/super class	`Ctrl` + `U`
Navigation Show Navigation bar	`Alt` + `Home`
Navigation Edit Source	`F4`
Navigation View Source	`Ctrl` + `Enter`
Navigation Move to code block end/start	`Ctrl` + `]` / `Ctrl` + `[`
Navigation Go to Previous/Next Method	`Alt` + `Up Arrow` / `Alt` + `Down Arrow`
Navigation Open Quick Definition Lookup	`Ctrl` + `Shift` + `I`
Compile and Run Run Command Line	`Ctrl` + `Shift` + `X`
Compile and Run Run	`Shift` + `F10`
Compile and Run Debug	`Shift` + `F9`
Compile and Run Run Context editor from Editor	`Ctrl` + `Shift` + `F10`
Usage Search Find Usage in File	`Ctrl` + `F7`
Usage Search Find Usage	`Alt` + `F7`
Usage Search Highlight Usage in File	`Ctrl` + `Shift` + `F7`
Usage Search Show Usage	`Ctrl` + `Alt` + `F7`
VCS/Local History Commit Project to VCS	`Ctrl` + `K`
VCS/Local History Update Project from VCS	`Ctrl` + `T`
VCS/Local History View Recent Changes	`Ctrl` + `Shift` + `E`
VCS/Local History VCS Operations Popup	`Alt` + `
Live Template/Snippets Insert Live Template	`Ctrl` + `J`
Live Template/Snippets echo' Statement	`eco`
Live Template/Snippets foreach(iterable_expr as $value){…}	`fore`
Live Template/Snippets foreach(iterable_expr as $key=>$value){…}	`forek`
Live Template/Snippets "include"/"include_once" statement	`inc/inco`
Live Template/Snippets private function	`prif`
Live Template/Snippets protected function	`prof`
Live Template/Snippets public function	`pubf`
Live Template/Snippets "require"/"require_once" statement	`rqr/rqro`