What are some common methods to remove leading zeros from a PHP variable?

Leading zeros in a PHP variable can be removed using various methods such as using the ltrim() function, typecasting the variable to remove leading zeros, or using regular expressions to replace leading zeros with an empty string. 

// Method 1: Using ltrim() function to remove leading zeros
$number = "00123";
$number = ltrim($number, '0');
echo $number;

// Method 2: Typecasting the variable to remove leading zeros
$number = "00123";
$number = (int)$number;
echo $number;

// Method 3: Using regular expressions to replace leading zeros with an empty string
$number = "00123";
$number = preg_replace('/^0+/', '', $number);
echo $number;

Keywords

PHP variable leading zeros trim ltrim

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