如何将require语句的输出转换为php中的字符串

Question

im working with a large team, and im making functions that return html code, and im echoing the result of those functions to get the final page. The thing is, i need some scrap of code developed by other member of the team, and i need it to be a string, but the code is available as a php file which im supposed to include or require inside my page.

Since im not writing an ht;ml page, but a function that generate that code, i need to turn the resulting html of the require statement into a string to concatenate it to the code generated by my function.

Is there any way to evaluate the require and concatenate its result to my strings?

Ive tried the function eval(), but didnt work, and read some thing about get_the_content(), but it isnt working either. I dont know if i need to import something, i think it have something to do with wordpress, and im using raw php.

thanks for all your help!!! =)

Answer 1

Try the ob_...() family of functions. For example:

<?php

    function f(){
        echo 'foo';
    }
    //start buffering output. now output will be sent to an internal buffer instead of to the browser.    
    ob_start();

    //call a function that echos some stuff
    f();

    //save the current buffer contents to a variable
    $foo = ob_get_clean();

    echo 'bar';
    echo $foo;

    //result: barfoo

?>

If you want to put the echo'd result of an include into a variable, you could do something like this:

//untested
function get_include($file){
    ob_start();
    include($file);
    return ob_get_clean();
}

or if you want to put the echo'd result of a function call into a variable, you could do something like this:

//untested
//signature: get_from_function(callback $function, [mixed $param1, [mixed $param2, ... ]])
function get_from_function($function){
    $args = func_get_args();
    shift($args);
    ob_start();
    call_user_func_array($function,$args);
    return ob_get_clean();
}