file-permission — 3 Technical Articles

Jan 6, 2026 · Backend Development

How to Use PHP’s is_executable() to Check File Executability

This guide explains PHP’s is_executable() function, covering its signature, parameters, return values, practical code example, detailed explanation, important caveats, and common scenarios such as validating uploaded files, checking binaries, and verifying execution permissions to improve application security.

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How to Use PHP’s is_executable() to Check File Executability

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Oct 21, 2025 · Backend Development

How to Use PHP’s is_writable() to Check File and Directory Permissions

This guide explains the PHP is_writable() function, its syntax, and provides clear examples for checking whether files or directories are writable, how to combine it with file existence checks, and how to determine write permissions in various scenarios.

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How to Use PHP’s is_writable() to Check File and Directory Permissions

php Courses

Sep 30, 2025 · Backend Development

How to Use PHP’s is_writable() to Check File and Directory Permissions

This guide explains PHP’s is_writable() function, its syntax, and how to use it to check whether files or directories are writable, including examples for checking file writability, directory writability, existence, and permission handling, helping developers manage file system operations safely.

backendfile-permissionis_writable

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