3v4l.org

run code in 300+ PHP versions simultaneously

@ 2014-08-01T21:58:26Z

<?php

function do_split($name) {
    return preg_split('/([A-Z]{2,}|([A-Z][^A-Z]*))/', $name, null, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);
}

function convert_case($name) {
    return implode(
        '_',
        array_map(
            'strtolower',
            do_split($name)
        )
    );
}

function convert_case2($name) {
    $words = array();
    $prev = '';
    for ($i = 0; $i < strlen($name); $i++) {
        $char = $name[$i];
        echo "{$char} " . (ctype_upper($char) ? 'true' : 'false') . "\n";
    }
    return strtolower(implode('_', $words));
}

convert_case2('FooBARbar0123');

$samples = array(
    'FooBar',
    'FooBAR',
    'FOOBar',
    'foo_bar',
    'FOO_bar',
    'foo_BAR',
    'foo_Bar',
    'Foo_bar',
);


/*
print_r(array_map(function ($name) {
    return array(
        'name' => $name,
        'split' => do_split($name),
        'converted' => convert_case($name),
    );
}, $samples));
*/

Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: F true o false o false B true A true R true b false a false r false 0 false 1 false 2 false 3 false
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 F true o false o false B true A true R true b false a false r false 0 false 1 false 2 false 3 false

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