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<?php

class X { function __descruct() { echo "I'm done!"; } }

function make_x() { new X(); }

for ($i = 0; $i < 10; $i++) {
    echo "Making X $i\n";
    make_x();
}

eol versions

Output
Performance
VLD opcodes
References
Segmentation fault
RFC branches

Output for 4.3.0 - 7.2.0: Making X 0 Making X 1 Making X 2 Making X 3 Making X 4 Making X 5 Making X 6 Making X 7 Making X 8 Making X 9