This operation reports or changes a narrowly scoped PHP runtime value.
Before using it, identify which data, connection or runtime state the operation reads or changes. This avoids examples that appear to work but apply to a different context.
What Is token_get_all() in PHP?
This operation reports or changes a narrowly scoped PHP runtime value.
Syntax:
<?php
// Signature for reference only
token_get_all(string $code, [optional] int $flags) : array
Parameters and Return Value
$code— Required string argument supplied to this operation.$flags— Optional int argument supplied to this operation.
The declared return type is array.
Example 1: Basic Usage
<?php
print_r(token_get_all("<?php echo 1;"));This operation reports or changes a narrowly scoped PHP runtime value.
Example 2: Another Case
<?php
print_r(token_get_all("<?php function greet(): void {}", TOKEN_PARSE));The second example changes the input or surrounding conditions, which matters when choosing this API for real application code.
Practical Example
<?php
$tokens = token_get_all("<?php echo 42;");
foreach ($tokens as $token) { if (is_array($token)) { echo token_name($token[0]) . "\n"; } }The practical example is a teaching scenario. Change sample configuration and credentials before using a similar design in an application.
Important Behavior and Edge Cases
- Results depend on the active PHP configuration; do not expose environment internals on public pages.
- Relevant PHP environment: tokenizer. Ensure the required extension and operating-system capabilities are present.
- Check results and release resources where necessary; successful syntax alone does not guarantee a successful operation.
Comparison With Related Functions
| Option | When to Use It |
|---|---|
token_get_all | This operation reports or changes a narrowly scoped PHP runtime value. |
phpinfo | Use this related operation for its different responsibilities; do not assume identical inputs or return values. |
Common Beginner Mistakes
| Mistake | Correct Approach |
|---|---|
| Assuming a successful return value | Inspect the returned value and handle failures according to this operation’s contract. |
| Using the API without its required environment | Supply the required resources, runtime configuration and permissions before calling it. |
| Copying demonstration values into production | Use application-specific validated values, secure configuration and safe error handling. |
Key Takeaways
- This operation reports or changes a narrowly scoped PHP runtime value.
- Results depend on the active PHP configuration; do not expose environment internals on public pages.
- Validate inputs and handle failure conditions before integrating this operation into a production workflow.
This operation reports or changes a narrowly scoped PHP runtime value. Use the appropriate runtime and treat any environment-dependent output as an example, not a guaranteed result.