static PhpValue PregReplaceInternal(Context ctx, PatternAndReplacement[] regexes, PhpValue subject, long limit, out long count, bool filter)
{
count = 0;
// PHP's behaviour for undocumented limit range
if (limit < -1)
{
limit = 0;
}
if (regexes == null)
{
// NOTE: PHP returns FALSE when pattern is string and replacement is array which is wrong according to manual
return(PhpValue.Null);
}
// enumerate subjects first, then patterns and replacements
if (subject.IsPhpArray(out var subject_array))
{
// returning PhpArray
var arr = new PhpArray(subject_array.Count);
var s = subject_array.GetFastEnumerator();
while (s.MoveNext())
{
var oldcount = count;
var newvalue = PregReplaceInternal(ctx, regexes, s.CurrentValue.ToPhpString(ctx), limit, ref count);
if (filter && oldcount == count)
{
continue;
}
arr[s.CurrentKey] = newvalue.DeepCopy();
}
return(arr);
}
else
{
var newvalue = PregReplaceInternal(ctx, regexes, subject.ToPhpString(ctx), limit, ref count);
if (filter && count == 0)
{
return(PhpValue.Null);
}
return(newvalue);
}
}