How to remove all leading zeroes in a string

you can add "+" in your variable,

example :

$numString = "0000001123000";
echo +$numString;

(string)((int)"00000234892839")

Similar to another suggestion, except will not obliterate actual zero:

if (ltrim($str, '0') != '') {
    $str = ltrim($str, '0');
} else {
    $str = '0';
}

Or as was suggested (as of PHP 5.3), shorthand ternary operator can be used:

$str = ltrim($str, '0') ?: '0';

ltrim:

$str = ltrim($str, '0');

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