Does it catch every syntax error like a real PHP parser?

No. This is a practical checker focused on matching parentheses and strings rather than a full PHP parser. For accurate syntax validation, check with a real PHP environment (php -l).

What happens if there's no '<?php' tag?

You'll see a warning, but it's fine to ignore if you're only checking a code fragment.

Is the code I enter sent to a server?

No. It's checked entirely in your browser.

No — it is a lightweight balance checker, not a parser. Use php -l for an exact syntax check.

Does PHP mixed with HTML work?

Balance is counted over the whole text, including the HTML outside PHP tags — treat results as a reference.

🐘 PHP Syntax Checker

Checks whether the parentheses (){} [] in your PHP code are matched and whether strings are properly closed.

⚠️ Practical checker — not a full PHP-parser-based syntax check, focused on matching parentheses and strings

PHP Code

How to use

Enter your PHP code.
Click "Check".
The result shows whether parentheses, braces, and strings are matched.

🎯 Use Cases

Catch mismatched braces after writing a long function
Find unclosed string literals
Sanity-check code structure before pasting it in

Example

Input

<?php
function greet($name) {
    if ($name) {
        echo "Hello, $name";
    }

Output

• 2번째 줄: '{' 가 닫히지 않았습니다

The function's opening brace is never closed, so the checker flags that the '{' on line 2 is unclosed (the message text is Korean, meaning "line 2: '{' is not closed"). When everything matches, it shows "✅ All parentheses and strings are matched" instead.

PHP string notation specifics

In PHP, the quote type decides whether variables expand. This tool checks bracket (){}[] balance and string termination.

Notation	Behavior
Single quote `'`	Literal string — no variable expansion, faster
Double quote `"`	Variables expand inside, e.g. "text $var"
Heredoc/nowdoc	`<<<EOT` multi-line strings — nowdoc without expansion
Variables	Start with $ — only expanded inside double quotes

FAQ

Does it catch every syntax error like a real PHP parser?: No. This is a practical checker focused on matching parentheses and strings rather than a full PHP parser. For accurate syntax validation, check with a real PHP environment (php -l).
What happens if there's no ': You'll see a warning, but it's fine to ignore if you're only checking a code fragment.
Is the code I enter sent to a server?: No. It's checked entirely in your browser.
Is this like php -l?: No — it is a lightweight balance checker, not a parser. Use php -l for an exact syntax check.
Does PHP mixed with HTML work?: Balance is counted over the whole text, including the HTML outside PHP tags — treat results as a reference.