How to remove 0 in front of numbers in php

php method to remove the 0 in front of the number: 1. Remove the 0 in front of the number through the "str_replace ("0", "", $str);" method; 2. Through "preg_replace('/^0 */', '', $string);" method removes the 0 in front of the number.

The operating environment of this article: windows7 system, PHP7.1 version, DELL G3 computer

How to remove the 0 in front of the number in php?

When 01 is entered, only 1 is taken, no 0

Method one:

$str = '01';
$str = str_replace ("0", "", $str);

Method two:

echo preg_replace('/^0*/', '', $string);

Note: Learn PHP regular expressions carefully As follows:

ereg( "^[A-Za-z0-9_.-] $ ",$str);

eregi( "^[a-z0-9_.-] $ ",$str);

is_float: Determine whether the variable type is a floating point number type.

is_int: Determine whether the variable type is an integer type.

is_integer: Determine whether the variable type is a long integer type.

is_long: Determine whether the variable type is a long integer type.

is_object: Determine whether the variable type is an object type.

is_real: Determine whether the variable type is a real number type.

ereg -- Regular expression matching.

Recommended learning: "PHP Video Tutorial"

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