Question

In a simple template parser anywhere $00, $11, etc. appears in the HTML it is being removed. I don’t see what’s in my pattern that is causing $10 to be stripped from the replacement.

What is strange is I’ve commented out nearly all of my code except the main preg_replace function that handles the tag. Seemingly there is no connection, but nearly everything else has been removed.

Function (not showing what’s commented out):

public function output() {
    $output = file_get_contents($this->file);

    foreach ($this->values as $key => $value) {
        $dynamic = preg_quote($key);
        $pattern = '%\[@'.$dynamic.'.*?\]%';
        $output  = preg_replace($pattern, $value, $output);     

        if ($key == 'objective') {
            $objective = $value;
        }
    }
}

HTML Excerpt:

[if @objective]<div id="objective">[@objective]</div>[/if]

Original value of ‘objective’ (ie, $value):

Obtain a position at XYZ Company where $words $100 !100 maximize my management skills, quality assurance, program development, and training experience.

New value of ‘objective’:

Obtain a position at XYZ Company where $words 0 !100 maximize my management skills, quality assurance, program development, and training experience.

Answer 1

(Follow-up to comment on the question.)

$xx (where x is a digit) is used for backreferences in the replacement string of preg_replace. If you want the replacement string to contain $xx, you have to escape it:

$value = preg_replace('/\\$\\d+/', '\\\\$0', $value);

This will replace $xx by \$xx in $value.