Use PHP functions in JavaScript

JavaScript strncmp

Binary safe string comparison

function strncmp ( str1, str2, lgth ) {
    // Binary safe string comparison  
    // 
    // version: 909.322
    // discuss at: http://phpjs.org/functions/strncmp    // +      original by: Waldo Malqui Silva
    // +         input by: Steve Hilder
    // +      improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +       revised by: gorthaur
    // + reimplemented by: Brett Zamir (http://brett-zamir.me)    // *     example 1: strncmp('aaa', 'aab', 2);
    // *     returns 1: 0
    // *     example 2: strncmp('aaa', 'aab', 3 );
    // *     returns 2: -1
    var s1 = (str1+'').substr(0, lgth);    var s2 = (str2+'').substr(0, lgth);
    
    return ( ( s1 == s2 ) ? 0 : ( ( s1 > s2 ) ? 1 : -1 ) );
}

external links: original PHP docs | raw js source

Examples

» Example 1

Running

1	strncmp('aaa', 'aab', 2);

Should return

» Example 2

Running

1	strncmp('aaa', 'aab', 3 );

Should return

-1

Dependencies

No dependencies, you can use this function standalone.

Open syntax issues

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