Manual do PHP
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# php_stream_copy_to_mem

php_stream_copy_to_mem -- Copy data from stream and into an allocated buffer

## Description

size_t php_stream_copy_to_mem ( php_stream * src, char ** buf, size_t maxlen, int persistent )

php_stream_copy_to_mem() allocates a buffer `maxlen`+1 bytes in length using pemalloc() (passing `persistent`). It then reads `maxlen` bytes from `src` and stores them in the allocated buffer.

The allocated buffer is returned in `buf`, and the number of bytes successfully read. You, the caller, are responsible for freeing the buffer by passing it and `persistent` to pefree().

If you want to copy all remaining data from the `src` stream, pass the constant `PHP_STREAM_COPY_ALL` as the value of `maxlen`.

> Nota: This function will attempt to copy the data in the most efficient manner, using memory mapped files when possible.

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