PHP Scalar Objectのテスト

scalar-objects-test.php

<?php

class StringExtension {
    public function replace($search, $replace) {
        return str_replace($search, $replace, $this);
    }

    public function preg_replace($pattern, $replacement) {
        return preg_replace($pattern, $replacement, $this);
    }

    public function indexOf($needle, $offset = 0) {
        $index = strpos($this, $needle, $offset);
        if($index === false) return -1;
        return $index;
    }

    public function length() {
        return strlen($this);
    }
    public function split($delimiter) {
        return explode($delimiter, $this);
    }
}
class ArrayExtension {
    public function length() {
        return count($this);
    }
    public function join($delimiter) {
        return implode($delimiter, $this);
    }
}

register_primitive_type_handler('string', 'StringExtension');

register_primitive_type_handler('array', 'ArrayExtension');

$s = "abcdefg";
echo $s->replace("a", "A")->preg_replace('/[ceg]/', "?")->split("?")->join("!")->indexOf("f");