PHP Password Hash Tool

How it works

What it does

This tool demonstrates PHP’s modern password API: creating hashes with password_hash and verifying candidates with password_verify. It exists to help developers wire authentication correctly—not to store your users’ real passwords in a third-party field.

When to use it

• Learning algorithm options (bcrypt/argon2 where available)
• Verifying that a stored hash string matches a known test password
• Checking hash info metadata during migrations

How input is processed safely

Only the submitted test password/hash are processed in memory for the request. There is no user database, no credential storage, and no emailing of hashes. Still treat anything you type as potentially logged by your browser history—use dummy passwords.

Examples

• Generate a bcrypt hash for test-password-123
• Verify a candidate against that hash
• Inspect algorithm/options via password_get_info semantics

Common mistakes

• Pasting production user password hashes from a live database
• Reversible encryption mistaken for password hashing
• Truncating hashes when storing in too-narrow DB columns

PHP’s password API wraps modern algorithms and stores algorithm parameters inside the hash string so verification can evolve. That design is why you should not invent your own concatenation of SHA rounds for passwords.

Use this page only with synthetic passwords while learning or validating application glue code. Real credential resets and migrations belong in secured admin environments with audit trails.

When verifying, handle failure generically in user-facing messages. Do not reveal whether a username exists based on timing alone if you can avoid it—application architecture still matters beyond the hash call.

Practical tips

• Keep inputs small and representative; huge pastes slow feedback and raise risk of accidental secret disclosure.
• After using PHP Password Hash Tool, verify the result in your own environment (correct SAPI, correct host, correct project root).
• Cross-link findings to ZendStudio.net PHP error guides and IDE setup pages when the next step is configuration rather than code edits.
• Prefer repeatable project tooling (CI, Composer scripts, IDE inspections) for repo-wide enforcement; this page is for interactive problem-solving.

Privacy note

Never paste real user passwords or production hash dumps. Use synthetic values. Prefer offline scripts inside your secure environment for real migration work.

Safety notes

• Submitted tool contents are not written to analytics or search logs.
• This site never evaluates arbitrary PHP from the browser.
• Generated configs are starting points—validate on a staging host before production.