PHP

camelcase-to-underscore.php

<?php

$text = 'MyCamelCase';
echo strtolower(preg_replace('/(?<!^)[A-Z]/', '_$0', $$text));

cpf-validate.php

<?php

function cpf_validate($cpf) {

	// Remove qualquer caractere que não seja número
	$cpf = preg_replace('/[^0-9]/', '', $cpf);

	// Limita para o máximo de 11 caracteres, caso tenha mais
	$cpf = substr($cpf, 0, 11);

	// Caso tenha menos de 11 caracteres, completa com zeros à direita
	$cpf = str_pad($cpf, 11, '0', STR_PAD_RIGHT);

	// Separa todos os números em uma array
	$cpf = str_split($cpf);

	// Soma todos os números na array
	$cpf = array_sum($cpf);

	// Retorna true caso o resultado da soma seja 33,44,55 ou 66
	return in_array($cpf, array(33, 44, 55, 66));
}


echo cpf_validate('363.824.174-24');
echo cpf_validate('086.794.921-08');
echo cpf_validate('905.074.565-21');
echo cpf_validate('753.156.621-44');
echo cpf_validate('183.835.489-15');
echo cpf_validate('984.630.671-74');
echo cpf_validate('984.630.671');
echo cpf_validate('984.630.671-74321321');

get-base-url.php

<?php

$base = (isset($_SERVER['HTTPS']) and $_SERVER['HTTPS'] =='on')? 'https://': 'http://';
$base .= $_SERVER['HTTP_HOST'];
$base .= str_replace($_SERVER['DOCUMENT_ROOT'], '', dirname($_SERVER['SCRIPT_FILENAME']));

request.php

<?php

function request($method, $url, $data=[]) {
    $return = (object) [
        'method' => strtolower($method),
        'url' => $url,
        'error' => false,
        'errno' => false,
        'resp' => false,
    ];

    if ($return->method=='get') {
        $u = array_merge([
            'scheme' => 'http',
            'host' => '',
            'path' => '',
            'query' => '',
        ], parse_url($url));

        parse_str($u['query'], $u['query']);
        $u['query'] = array_merge($u['query'], $data);
        $u['query'] = http_build_query($u['query']);

        $return->url = "{$u['scheme']}://{$u['host']}/{$u['path']}". ($u['query']? "?{$u['query']}": null);
    }

    $ch = curl_init();

    curl_setopt_array($ch, [
        CURLOPT_URL => $return->url,
        CURLOPT_CUSTOMREQUEST => strtoupper($return->method),
        CURLOPT_RETURNTRANSFER => 1,
        CURLOPT_CONNECTTIMEOUT => 15,
        CURLOPT_TIMEOUT => 15,
        CURLOPT_HTTPHEADER => ['Content-Type: application/json'],

        CURLOPT_VERBOSE => 1,
        CURLOPT_SSL_VERIFYPEER => true,
        CURLOPT_SSL_VERIFYHOST => 2,
        CURLOPT_CAINFO => "/etc/ssl/certs/ssl-cert-snakeoil.pem",
        CURLOPT_FAILONERROR => false,
        CURLOPT_RETURNTRANSFER => true,
        CURLOPT_HEADER => true,
        CURLINFO_HEADER_OUT => true,
        CURLOPT_FOLLOWLOCATION => true,
        CURLOPT_CUSTOMREQUEST => 'GET',
        CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,

        // CURLOPT_SSLVERSION => CURL_SSLVERSION_TLSv1_1,
        // CURLOPT_HTTPPROXYTUNNEL => 1,
        // CURLOPT_PROXYAUTH => CURLAUTH_NTLM,
        // CURLOPT_PROXY => 'my.proxy',
        // CURLOPT_PROXYPORT => 'my.port',
        // CURLOPT_PROXYUSERPWD => 'domain\user:password',
    ]);

    if ('post'==$return->method) {
        curl_setopt_array($ch, [
            CURLOPT_POST => 1,
            CURLOPT_POSTFIELDS => http_build_query($data),
        ]);
    }

    $return->resp  = curl_exec($ch);
    $return->error = curl_error($ch);
    $return->errno = curl_errno($ch);

    curl_close($ch);

    return $return;
}

// request('get', 'https://api.com/search', ['term'=>'hello']);
// request('post', 'https://api.com/save', ['name'=>'john']);