Use PHP functions in JavaScript

JavaScript substr_replace

Replaces part of a string with another string

function substr_replace (str, replace, start, length) {
    // Replaces part of a string with another string  
    // 
    // version: 909.322
    // discuss at: http://phpjs.org/functions/substr_replace    // +   original by: Brett Zamir (http://brett-zamir.me)
    // *     example 1: substr_replace('ABCDEFGH:/MNRPQR/', 'bob', 0);
    // *     returns 1: 'bob'
    // *     example 2: $var = 'ABCDEFGH:/MNRPQR/';
    // *     example 2: substr_replace($var, 'bob', 0, $var.length);    // *     returns 2: 'bob'
    // *     example 3: substr_replace('ABCDEFGH:/MNRPQR/', 'bob', 0, 0);
    // *     returns 3: 'bobABCDEFGH:/MNRPQR/'
    // *     example 4: substr_replace('ABCDEFGH:/MNRPQR/', 'bob', 10, -1);
    // *     returns 4: 'ABCDEFGH:/bob/'    // *     example 5: substr_replace('ABCDEFGH:/MNRPQR/', 'bob', -7, -1);
    // *     returns 5: 'ABCDEFGH:/bob/'
    // *     example 6: 'substr_replace('ABCDEFGH:/MNRPQR/', '', 10, -1)'
    // *     returns 6: 'ABCDEFGH://'
    if (start < 0) { // start position in str        start = start + str.length;
    }
    length = length !== undefined ? length : str.length;
    if (length < 0) {
        length = length + str.length - start;    }
    return str.slice(0, start)+replace.substr(0, length)+replace.slice(length)+str.slice(start+length);
}

external links: original PHP docs | raw js source

Examples

» Example 1

Running

1	substr_replace('ABCDEFGH:/MNRPQR/', 'bob', 0);

Should return

'bob'

» Example 2

Running

1 2	$var = 'ABCDEFGH:/MNRPQR/'; substr_replace($var, 'bob', 0, $var.length);

Should return

'bob'

Dependencies

No dependencies, you can use this function standalone.

Open syntax issues

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