PHP preg_last_error() function

The preg_last_error function is used to return the error code generated by the last PCRE regular execution.

grammar

 int preg_last_error ( void )

Example

Returns the specified matching elements in the array:

The execution result is as follows:

 Backtrack limit was exhausted!

return value

PREG_NO_ERROR

PREG_INTERNAL_ERROR

PREG_BACKTRACK_LIMIT_ERROR

PREG_RECURSION_LIMIT_ERROR

PREG_BAD_UTF8_ERROR

PREG_BAD_UTF8_OFFSET_ERROR

Detailed parameter descriptions can be found at: PHP Regular Expression (PCRE)