PHP Syntax Checker
Check the syntax of PHP code
Features
No execution environment needed
Check syntax just by pasting, without installing PHP
Show errors by line
Check the line numbers with errors and the error details in a list
Inline display in the code field
Show error messages directly on the relevant line in the editor
Try instantly with samples
Insert two kinds of code, valid and erroneous, with one click
How to Use
Enter the PHP code
Paste or type the PHP code you want to check in the input field
Run the check
Press the run button or Ctrl/Cmd+Enter to start the syntax check
Check the error locations
If there are errors, the line number and details are shown; otherwise it shows no problems
Use Cases
Preventing mistakes before deployment
Find syntax mistakes before pushing to the server to avoid production errors
Checking while learning PHP
Instantly check whether your code is syntactically correct without a local environment
Verifying edited code
Inspect edited code for new syntax errors before applying it
Pre-checking received code
Check the syntactic validity of code received from outside before adopting it
Basic Knowledge
Difference Between Syntax Errors and Runtime Errors
Syntax errors are mistakes in how code is written, such as missing semicolons or mismatched brackets, and can be detected mechanically before execution. Runtime errors, on the other hand, occur during execution, such as calling undefined functions or failing to read files, and are not caught by syntax checking.
How to Read Parse Errors
PHP syntax errors are reported in the form "Parse error: syntax error, unexpected 〜". The line number shown indicates where the error was detected, but the actual cause often lies before that line, such as a missing semicolon or unclosed bracket on the previous line.
Safety and Privacy
Server-side processing
Input is processed on the server; only information necessary for the inquiry is sent.
Temporary processing only
For the PHP syntax check, temporary processing occurs on the server, then data is discarded after results are returned.
Communications encrypted with HTTPS
All sent and received data is encrypted by TLS and cannot be read by third parties.
No transmission to third parties
Input content is not sent to external services such as ad networks or trackers.
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Updates
- update #398
PHP Syntax Checker now supports PHP 8.5 syntax validation
- update #330
Added a selection field to choose the PHP version used for validation in the PHP Syntax Validator
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Can be used for commercial purposes such as research, calculation, processing, and conversion in business and production.
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If using in streaming and videos
Link to RAKKOTOOLS in the description, or Mention or display that you are using RAKKOTOOLS in the stream or video.
Credit example for the description
Usage guidelinesYou are free to use it for normal purposes. However, use for purposes that violate laws, infringe on third-party rights, impose significant load on the service, or otherwise interfere with service operation is prohibited.
We do not guarantee the accuracy or completeness of information and calculation results obtained from each tool.
This notice is a translation of the original Japanese text. If there is any discrepancy between the translation and the original, the Japanese original takes precedence.