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<?php Var_dump(substr("",0,1));
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.25, 8.4.1 - 8.4.13
string(0) ""
Output for 5.4.27, 5.6.0 - 5.6.40
bool(false)
preferences:
162.78 ms | 407 KiB | 5 Q