CODEWITHSUNDEEP
php
Ben
Ben

Reputation: 2564

Detect first zero from string in php

function number_check($int){
    if($int>0 && !is_float($int)){return TRUE;}
    else{return FALSE;}
}

$var="025";

if(number_check($var)){echo "pass";}else{echo "fail";}

I have make a function to check the number for post id.

post_id should always > 0 and no decimal.

but I have a problem when user try to enter 000243, if user put zero at front, it return true.

Is any way to solve this?

Upvotes: 0

Views: 1298

Answers (4)

Nikhil Patel
Nikhil Patel

Reputation: 1781

I think checking $int{0} != 0 will solve what you are trying to achieve : 

function number_check($int){
    if ( $int > 0 && !is_float($int) && $int{0} != 0 ) {
        return TRUE;
    }
    else {
        return FALSE;
    }
}

$var="023";

if ( number_check($var) ) {
    echo "pass";
} else {
    echo "fail";
}

Check this DEMO

Upvotes: 1

KodeFor.Me
KodeFor.Me

Reputation: 13511

Another way to do that is the following:

function prepareID($id)
{
    $id = preg_replace('/^([0]*)/', '', $id);

    return (int)$id;
}

$var = prepareID("025");

The prepareID function will remove any leading zeros and it will return an integer

Upvotes: 1

Moax6629
Moax6629

Reputation: 378

try to assign value to $var without using quotes. i.e $var = 000243;

Upvotes: 1

Adam
Adam

Reputation: 1371

try this:

<?php
echo intval('000243');
?>

Upvotes: 2

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