Returns the peak of memory allocated by PHP

# memory_get_peak_usage

(PHP 5 >= 5.2.0, PHP 7, PHP 8)

memory_get_peak_usage — Returns the peak of memory allocated by PHP

### Description

memory_get_peak_usage(bool `$real_usage` = `false`): int

Returns the peak of memory, in bytes, that's been allocated to your PHP script.

### Parameters

`real_usage`

  Set this to `true` to get the real size of memory allocated from system. If not set or `false` only the memory used by `emalloc()` is reported.

### Return Values

Returns the memory peak in bytes.

### See Also

- memory_get_usage() - Returns the amount of memory allocated to PHP
- memory_reset_peak_usage() - Reset the peak memory usage
- memory_limit

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