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<?php $a = [ 'sss4444dfdf', //лишние '444444', //много 'sdfsdf', //все не то '', // '4', //мало ]; print_r(preg_filter('/^\D*(\d{2,4}).*$/', '$1', $a[$i++])); print_r(preg_filter('/^\D*(\d{2,4}).*$/', '$1', $a[$i++])); print_r(preg_filter('/^\D*(\d{2,4}).*$/', '$1', $a[$i++])); print_r(preg_filter('/^\D*(\d{2,4}).*$/', '$1', $a[$i++])); print_r(preg_filter('/^\D*(\d{2,4}).*$/', '$1', $a[$i++]));
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: Undefined variable $i in /in/VDLYC on line 9 Warning: Undefined array key "" in /in/VDLYC on line 9 Deprecated: preg_filter(): Passing null to parameter #3 ($subject) of type array|string is deprecated in /in/VDLYC on line 9 4444
Output for 8.0.0 - 8.0.30
Warning: Undefined variable $i in /in/VDLYC on line 9 Warning: Undefined array key "" in /in/VDLYC on line 9 4444
Output for 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 - 7.3.31, 7.4.0 - 7.4.33
Notice: Undefined variable: i in /in/VDLYC on line 9 Notice: Undefined index: in /in/VDLYC on line 9 4444
Output for 7.3.32 - 7.3.33
4444
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/VDLYC on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/VDLYC on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/VDLYC on line 2
Process exited with code 255.
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