Ok, para eliminar todas las variables, tal vez el más bonito es
$url = strtok($url, '?');
Ver sobre strtok
here.
Es el más rápido (ver a continuación), y maneja las URL sin un '?' correctamente.
Para tomar una url + cadena de consulta y quitar una sola variable (sin necesidad de utilizar una expresión regular sustituir, que puede ser más rápido en algunos casos), es posible hacer algo como:
function removeqsvar($url, $varname) {
list($urlpart, $qspart) = array_pad(explode('?', $url), 2, '');
parse_str($qspart, $qsvars);
@unset($qsvars[$varname]);
$newqs = http_build_query($qsvars);
return $urlpart . '?' . $newqs;
}
una expresión regular reemplazar para eliminar una var sola podría ser:
function removeqsvar($url, $varname) {
return preg_replace('/([?&])'.$varname.'=[^&]+(&|$)/','$1',$url);
}
Heres los horarios de algunos métodos diferentes, garantizando el tiempo se restablece entre medio de carreras.
<?php
$number_of_tests = 40000;
$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$starttime = $mtime;
for($i = 0; $i < $number_of_tests; $i++){
$str = "http://www.example.com?test=test";
preg_replace('/\\?.*/', '', $str);
}
$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$endtime = $mtime;
$totaltime = ($endtime - $starttime);
echo "regexp execution time: ".$totaltime." seconds; ";
$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$starttime = $mtime;
for($i = 0; $i < $number_of_tests; $i++){
$str = "http://www.example.com?test=test";
$str = explode('?', $str);
}
$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$endtime = $mtime;
$totaltime = ($endtime - $starttime);
echo "explode execution time: ".$totaltime." seconds; ";
$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$starttime = $mtime;
for($i = 0; $i < $number_of_tests; $i++){
$str = "http://www.example.com?test=test";
$qPos = strpos($str, "?");
$url_without_query_string = substr($str, 0, $qPos);
}
$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$endtime = $mtime;
$totaltime = ($endtime - $starttime);
echo "strpos execution time: ".$totaltime." seconds; ";
$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$starttime = $mtime;
for($i = 0; $i < $number_of_tests; $i++){
$str = "http://www.example.com?test=test";
$url_without_query_string = strtok($str, '?');
}
$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$endtime = $mtime;
$totaltime = ($endtime - $starttime);
echo "tok execution time: ".$totaltime." seconds; ";
muestra
regexp execution time: 0.14604902267456 seconds; explode execution time: 0.068033933639526 seconds; strpos execution time: 0.064775943756104 seconds; tok execution time: 0.045819044113159 seconds;
regexp execution time: 0.1408839225769 seconds; explode execution time: 0.06751012802124 seconds; strpos execution time: 0.064877986907959 seconds; tok execution time: 0.047760963439941 seconds;
regexp execution time: 0.14162802696228 seconds; explode execution time: 0.065848112106323 seconds; strpos execution time: 0.064821004867554 seconds; tok execution time: 0.041788101196289 seconds;
regexp execution time: 0.14043688774109 seconds; explode execution time: 0.066350221633911 seconds; strpos execution time: 0.066242933273315 seconds; tok execution time: 0.041517972946167 seconds;
regexp execution time: 0.14228296279907 seconds; explode execution time: 0.06665301322937 seconds; strpos execution time: 0.063700199127197 seconds; tok execution time: 0.041836977005005 seconds;
victorias strtok, y es, con mucho, el código más pequeño.
Me quedaría con lo que tienes a menos que el rendimiento no sea un problema. La solución de expresiones regulares proporcionada por Gumbo va a ser lo más bonita posible. – MitMaro
No tiene que ser hermoso si va en functions.php o donde ocultes tus feos bits, solo necesitarás ver qs_build() para llamarlo –
Esta es una forma de hacerlo a través de una buena función anónima. http://stackoverflow.com/questions/4937478/strip-off-url-parameter-with-php/17287657#17287657 – doublejosh