On Mon, 04 Mar 2019 02:23:46, Peter Kokot wrote:
Now, interesting is that in bash and some langs (where the main
environment is CLI), there is by default newline echoed. In PHP and
other languages there isn't. Changing default functionality of echo in
PHP is like changing left-hand traffic countries to use right-hand
traffic. A new function name would be needed for that. You can start
with creating an extension for this.
I think the best option is a new function like "puts" or "posix_puts". I looked
into this but im having trouble. i started with "var_dump" because that does
produce a newline by default [1]:
php_printf("%sbool(false)\n", COMMON);
new function would be most similar to "print", so i went to look at that code,
but it seems "print" uses "echo" internally [2]:
opline = zend_emit_op(NULL, ZEND_ECHO, &expr_node, NULL);
so then i went to look at "echo" code. however i cant actually seen to find
where that is defined, as the PHP codebase is... byzantine. it seems ZEND_ECHO
is handled by "zend_write" [3]:
zend_write(ZSTR_VAL(str), ZSTR_LEN(str));
which is handled by "write_function" [4]:
zend_write = (zend_write_func_t) utility_functions->write_function;
which is handled by "php_output_write" [5]:
zuf.write_function = php_output_write;
which is handled by "php_output_op" [6]:
php_output_op(PHP_OUTPUT_HANDLER_WRITE, str, len);
which is handled by "ub_write" [7]:
sapi_module.ub_write(context.out.data, context.out.used);
which is handled by "orig_ub_write" [8]:
sapi_module.ub_write = orig_ub_write;
which is handled by... "ub_write"? [9]:
size_t (*orig_ub_write)(const char *str, size_t str_length) =
sapi_module.ub_write;
it seems like a circular definition. surely i am getting something wrong, and
is it really need to go 8 levels of abstraction to write to standard output?
[1] https://github.com/php/php-src/blob/df57395/ext/standard/var.c#L109
[2] https://github.com/php/php-src/blob/df57395/Zend/zend_compile.c#L7361
[3] https://github.com/php/php-src/blob/df57395/Zend/zend_vm_def.h#L1584
[4] https://github.com/php/php-src/blob/df57395/Zend/zend.c#L810
[5] https://github.com/php/php-src/blob/df57395/main/main.c#L2140
[6] https://github.com/php/php-src/blob/df57395/main/output.c#L255
[7] https://github.com/php/php-src/blob/df57395/main/output.c#L1076
[8]
https://github.com/php/php-src/blob/df57395/ext/opcache/ZendAccelerator.c#L4211
[9]
https://github.com/php/php-src/blob/df57395/ext/opcache/ZendAccelerator.c#L4126
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