@ 2014-01-13T13:32:38Z <?php
$content_no_tags = "This is my content right here!\xC2\xA0This is my content right here!\xC2\xA0";
var_dump(preg_replace( '/(\s| \p{Zs})+/u',' ', $content_no_tags ));
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Output for 5.3.4 - 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 - 7.2.33 , 7.3.0 - 7.3.33 , 7.4.0 - 7.4.33 , 8.0.0 - 8.0.30 , 8.1.0 - 8.1.28 , 8.2.0 - 8.2.18 , 8.3.0 - 8.3.6 string(62) "This is my content right here! This is my content right here! "
Output for 4.4.0 - 4.4.9 , 5.0.5 , 5.1.0 - 5.1.6 , 5.2.0 - 5.2.17 , 5.3.0 - 5.3.3 string(64) "This is my content right here! This is my content right here! "
Output for 4.3.11 , 5.0.0 - 5.0.4 Warning: preg_replace(): Compilation failed: PCRE does not support \L, \l, \N, \P, \p, \U, \u, or \X at offset 11 in /in/SXNVm on line 5
NULL
Output for 4.3.0 - 4.3.10 Warning: Compilation failed: PCRE does not support \L, \l, \N, \P, \p, \U, \u, or \X at offset 11 in /in/SXNVm on line 5
NULL
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304.72 ms | 401 KiB | 460 Q