Online PHP editor | output for oIbRv

@ 2019-02-20T04:04:13Z

<?php
$string = 'III.OOO.OOO.S';
$search = 'OOO';
$replace = 'B';

//replace ONLY FIRST occurance of "OOO" with "B"
    echo substr_replace($string,$replace,0,strlen($search));
    //$string => B.OOO.OOO.S

echo "\n---\n";

//replace ONLY LAST occurance of "OOOO" with "B"
    echo substr_replace($string,$replace,strrpos($string,$search),strlen($search));
    //$string => OOO.OOO.B.S

echo "\n---\n";

    //replace ONLY LAST occurance of "OOOO" with "B"
    echo strrev(implode(strrev($replace),explode(strrev($search),strrev($string),2)));
    //$string => OOO.OOO.B.S

Output for 7.1.25 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0: B.OOO.OOO.S --- III.OOO.B.S --- III.OOO.B.S
Output for 8.4.15: /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.

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