How to include file in PHP with user defined variable

Question

I am trying to include file in string replace but in output i am getting string not the final output.

analytic.php

<?php echo "<title> Hello world </title>"; ?>

head.php

<?php include "analytic.php"; ?>

index.php

string = " <head> </head>";
$headin = file_get_contents('head.php');
$head = str_replace("<head>", "<head>". $headin, $head);
echo $head;

Output i am getting :

 <head><?php include "analytic.php"; ?> </head>

Output i need :

 <head><title> Hello world </title> </head>

Note : Please do not recommend using analytic.php directly in index.php because head.php have some important code and it has to be merged analytic.php with head.php and then index.php

file_get_contents only reads the file content, it does not put that content through the PHP parser. — C3roe
– C3roe, Commented Feb 6, 2023 at 9:44
Why not just do <head><?php include "head.php"; ?></head>? Please show me the detail if you can't. — shingo
– shingo, Commented Feb 6, 2023 at 9:47
@shingo analytic.php have analytic code from Google analytic, Microsoft clarity, and other analytic. head.php have many code including javascript and css linking. All are in different folder. So, i am trying to include all the analytic code in head.php and than head.php in index.php — Mehul Kumar
– Mehul Kumar, Commented Feb 6, 2023 at 9:50
@CBroe yes i know. even i cannot do $headin = include "analytic.php"; . What is the solution to it? — Mehul Kumar
– Mehul Kumar, Commented Feb 6, 2023 at 9:52
But that didn't explain why you cannot include head.php in index.php. — shingo
– shingo, Commented Feb 6, 2023 at 9:55

Rajeev · Accepted Answer · 2023-02-06 10:26:44Z

2

To get the desired output :

function getEvaluatedContent($include_files) {
    $content = file_get_contents($include_files);
    ob_start();
    eval("?>$content");
    $evaluatedContent = ob_get_contents();
    ob_end_clean();
    return $evaluatedContent;
}

$headin = getEvaluatedContent('head.php');

string = " <head> </head>";
$head = str_replace("<head>", "<head>". $headin, $head);
echo $head;

Output will be output string not file string :

 <head><title> Hello world </title> </head>

answered Feb 6, 2023 at 10:26

Rajeev

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Comments

Jasom Dotnet · Accepted Answer · 2023-02-06 10:18:26Z

1

I think your approach is pretty basic (you try to hardcore modify - programmerly edit - the template script, right?) but anyway:

$file = file('absolut/path/to/file.php');

foreach ($file as $line => $code) {

    if (str_contains($code, '<head>')) {

        $file[$line] = str_replace('<head>', '<head>' . $headin, $code);

        break;
    }
}

file_put_contents('absolut/path/to/file.php', $file);

answered Feb 6, 2023 at 10:18

Jasom Dotnet

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