<?php
function memoryUsage($usage, $base_memory_usage)
{
printf("Bytes diff: %d\n", $usage - $base_memory_usage);
}
function someBigValue()
{
return str_repeat('SOME BIG STRING', 4);
}
echo "String memory usage test.\n\n";
$base_memory_usage = memory_get_usage();
$base_memory_usage = memory_get_usage();
$a = someBigValue();
$b = $a;
//$b = strval($b);
echo "String value setted";
memoryUsage(memory_get_usage(), $base_memory_usage);
unset($a, $b);
echo "Unset";
memoryUsage(memory_get_usage(), $base_memory_usage);
/**FUNCTIONS***/
function memoryUsage($usage, $base_memory_usage)
{
printf("Bytes diff: %d\n", $usage - $base_memory_usage);
}
function someBigValue()
{
return str_repeat('SOME BIG STRING', 4);
}
/******END-FUNCITONS****/
echo "String memory usage test.\n\n";
$base_memory_usage = memory_get_usage();
$base_memory_usage = memory_get_usage();
echo "Start\n";
memoryUsage(memory_get_usage(), $base_memory_usage);
$a = array(someBigValue(), someBigValue(), someBigValue(), someBigValue());
echo "Value setted\n";
memoryUsage(memory_get_usage(), $base_memory_usage);
//
//link & off on cycle optimizations..else if not & it will be created copy structrue of $a//and when cycle ended original $a will be removed
foreach ($a as $k => &$value) {
unset($a[$k]);
// = someBigValue();
//unset($a[$k]);
unset($k, $value);
echo 'In Foreach cycle.' . PHP_EOL;
memoryUsage(memory_get_usage(), $base_memory_usage);
}
echo 'After foreach.' . PHP_EOL;
memoryUsage(memory_get_usage(), $base_memory_usage);
unset($a);
