[TYPO3-core] RFC #9779: t3lib_div::trimExplode limit parameter leads to wrong result with non-empty requirement

[Franz Holzinger]

Ingo Renner a écrit :

> 
> Solution:
> * Adjust the unit tests for t3lib_div::trimExplode() to the expected 
> behavior

I did a compare of the 2 calls:

1) explode(',', $teststring, 1);
2) explode(',', $teststring);

Your patch will force a complete explode in all cases.

1) 0.017 ms limit 1
2) 2.012 ms without limit

length of string	1474

This leads to a much slower code in a central function. It is more than 
the factor 100 slower with a string of about 1000 characters. This could 
however be avoided with an additional if.

I did not even test the rest of the new coming code.

- Franz