operate tag assignment operation of PHP variable.
{{ @operate val_name operator operand}}
operator = ( += | -= | *= | /= | %= | .= )
operand = val_name | string | numeral value
$assign['sample_operate1'] = 1;
$assign['sample_operate2']['a1'] = 3;
$assign['sample_operate3'] = 'operate';
$assign['sample_operate4']['a1'] = '_sample';
defined : {{ sample_operate1 }}<br>
{{ @operate sample_operate1 += 5 }}
Addition : {{ sample_operate1 }}<br>
{{ @operate sample_operate1 -= 1 }}
Subtraction : {{ sample_operate1 }}<br>
{{ @operate sample_operate1 *= 2 }}
Multiplication : {{ sample_operate1 }}<br>
{{ @operate sample_operate1 /= 2 }}
Division : {{ sample_operate1 }}<br>
{{ @operate sample_operate1 %= 2 }}
Modulus : {{ sample_operate1 }}<br>
<br>
<br>
{{ @operate sample_operate1 += sample_operate1 }}
Addition : {{ sample_operate1 }}<br>
{{ @operate sample_operate1 += sample_operate2.a1 }}
Addition : {{ sample_operate1 }}<br>
<br>
defined : {{ sample_operate3 }}<br>
{{ @operate sample_operate3 .= '_test' }}
Concatenate : {{ sample_operate3 }}<br>
{{ @operate sample_operate3 .= sample_operate4.a1 }}
Concatenate : {{ sample_operate3 }}<br>
defined : 1
Addition：6
Subtraction：5
Multiplication：10
Division：5
Modulus：1
Addition：2
Addition：5
defined : operate
Concatenate：operate_test
Concatenate：operate_test_sample