3v4l.org

run code in 300+ PHP versions simultaneously
<?php $txt = " Hello World\tFoo\t\tBar but single space is fine 8 are not, 4 are not,\ttabs are not,\t\tdouble tabs are not"; $orig = str_replace(' ', '', $txt); $t1 = preg_replace('/\t| {4}/', '', $txt); var_dump($txt); var_dump($orig); echo '-----------------' . PHP_EOL; var_dump($t1);
Output for 4.3.10 - 4.3.11, 4.4.0 - 4.4.9, 5.0.2 - 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, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30, 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
string(123) " Hello World Foo Bar but single space is fine 8 are not, 4 are not, tabs are not, double tabs are not" string(99) "HelloWorld Foo Bar but single space is fine8 are not,4 are not, tabs are not, double tabs are not" ----------------- string(93) "HelloWorldFooBar but single space is fine8 are not,4 are not,tabs are not,double tabs are not"
Output for 4.3.0 - 4.3.9, 5.0.0 - 5.0.1
string(123) " Hello World Foo Bar but single space is fine 8 are not, 4 are not, tabs are not, double tabs are not" string(99) "HelloWorld Foo Bar but single space is fine8 are not,4 are not, tabs are not, double tabs are not" Notice: Use of undefined constant PHP_EOL - assumed 'PHP_EOL' in /in/XcEAW on line 12 -----------------PHP_EOLstring(93) "HelloWorldFooBar but single space is fine8 are not,4 are not,tabs are not,double tabs are not"
preferences:
95.59 ms | 2886 KiB | 4 Q