3v4l.org

run code in 300+ PHP versions simultaneously
<?php $max = 1000; $arr = array_fill(0, $max, 1); $mem = memory_get_usage(true); $count = 0; foreach ($arr as $key => $val) { $count ++; $arr[$max+1] = 9999; } echo "123:"; echo $count.' === '.memory_get_usage(true)-$mem;
Output for 7.1.0 - 7.1.7, 7.2.0
123: Notice: A non well formed numeric value encountered in /in/cGdZZ on line 15 -2096152
Output for 7.0.0 - 7.0.20
123:-2096152
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
123:-523288
Output for 5.3.0 - 5.3.29
123:-785432
Output for 5.2.1 - 5.2.17
123:-261144
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0
Fatal error: Call to undefined function memory_get_usage() in /in/cGdZZ on line 5
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: memory_get_usage() in /in/cGdZZ on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.11, 4.4.0 - 4.4.4
Fatal error: Call to undefined function: memory_get_usage() in /in/cGdZZ on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: memory_get_usage() in /in/cGdZZ on line 5
preferences:
147.1 ms | 401 KiB | 174 Q