Approximating PHP variable sizes in memory
JUL
22
Jul 22, 2010
by
0
You ever become curious about how much memory your fancy variable is using in your php script? Although there is no direct function to tell you the usage of a specific variable, you can infer an approximation using memory_get_usage().
It is simple, call memory_get_usage() once and store the result. Set your variable up and then call memory_get_usage() again and get the difference. There are many factors that affect memory though so beware this is just an approximation.
$startmem = memory_get_usage();
$var = "Variable";
echo memory_get_usage() - $startmem;
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