I want to validate my numbers with regex before using it but it not working out

I want to validate my numbers with regex before using it but it not working out

I want the first digit to start with 0 follow by 2 or 5 and follow by 4 and the rest continue to 10 digit

<?php
$str = "0241310102";
$pattern = "([0]{1}[2,5]{1}[4]{1}[0-9]{7})";

if(preg_match($pattern, $str)){
echo "YES";
}else{
echo "NO";
}

?>

1. You need to anchor the pattern to the start/end of the string (^, $).
2. Single digits do not need to be specified as a character class [0] → 0
3. Quantifier need only to be specified if different from one 0{1} → 0
4. [2,5] would include the comma in the character class → [25]

$examples = [
    "0241310102",
    "1241310102",
    "0541310102",
    "0551310102",
    "0241"
];
$pattern = '(^0[25]4[0-9]{7}$)';

foreach ($examples as $example) {
    echo $example, ": ";
    if (preg_match($pattern, $example)) {
        echo "YES", "\n";
    } else {
        echo "NO", "\n";
    }
}