Update error_types default value and documentation explanation

Author: cursoragent

docs/platforms/php/common/configuration/options.mdx

@@ -146,11 +146,11 @@ Checks whether the provided class name is of a given type or subtype.
 
 </SdkOption>
 
-<SdkOption name="error_types" type='int' defaultValue='E_ALL'>
+<SdkOption name="error_types" type='int' defaultValue='error_reporting()'>
 
 Sets which errors are reported. It takes the same values as PHP's [`error_reporting`](https://www.php.net/manual/errorfunc.configuration.php#ini.error-reporting) configuration parameter.
 
-By default all types of errors are be reported (equivalent to `E_ALL`).
+By default, the error types reported are determined by the value returned by the `error_reporting()` function, which can change at runtime. Alternately, you can set the option to a fixed value by setting its value to a bitmask of the PHP `E_*` constants.
 
 </SdkOption>