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@ 2013-05-29T23:58:11Z

<?php

$vars = array();
$var = 'abc';
for($i = 0; $i< 10000; $i++){
  $vars[] = $var;
}
echo round(get_memory_usage()/1024, 2), 'KB';

Output
Performance
VLD
References
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round: documentation ( source)

preferences:dark modelive preview

43.51 ms | 402 KiB | 5 Q